UCSB Science Line

1302 questions in the Category: biology-animal.

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1:	Do turtles have teeth. Do only some types have teeth? If so, do the teeth fall out like ours?
2:	Where do cells come from? How were they made up?
3:	I watched a spider destroy its web and it appeared to roll the silk into a ball. Will it eat the old web to help produce new silk?
4:	I would like to know: Do dogs have a memory or do they just do things out of instinct and just know things? Do they have a memory "part" in their brain? If they do have memories, how is it compared to a human's brain? I personally think that dogs must have memories because for instance, if I scold and hit my dog today, in 3 days, if I raise my hand, even if it's not to hit him, he will most likely cover. So, this is because he remembers what I did, right?
5:	Why some insects can run across the surface of water?
6:	Could you please tell us the colour of the polar bears skin?
7:	As cells divide, towards the end of the end of cell division, it appears that each new daughter cell gets longer. Is this the result of the pinching in that occurs during cytokinesis, or are the cells getting longer. Of the two options, which one is primarily responsible for this effect?How do cells sort their organelles during cell division? Is it the luck of the draw, or a genetically programmed set of instructions at work?
8:	What was the cause of the dodo birds extinction and where did they live?
9:	What is the ecosystem? What are some common ecosystems?
10:	Is the Loch Ness monster real?
11:	How was life started?
12:	How long does it take to "grow" an exoskeleton after molting?
13:	Could a sea star digest human tissue with the same " stomach juice" it uses to dissolve the tissue of a mussel?
14:	Are clams born with shells?
15:	Is there any form of vaccine without pork that is equally if not more effective than the current flu ones we get? I know there are religions that don’t allow the consumption of pork, so is there any alternative that could work, why or why not?
16:	I was wondering whether it is possible or not for life to develop in a chlorine or fluorine atmosphere, and if not could you explain why?
17:	My classes have been watching a video produced by the Discovery Channel on bacteria. At one point in the video, the narrator says that human babies are born "bacteria free" but within a few hours hundred of kinds of bacteria colonize them. I can't believe that we are born bacteria free. Is this true or is this a mistake in the video?
18:	Are dogs really colorblind?
19:	What is the most deadly disease a person can get? What is the most common and rare disease people can get? How will science help us in the future and why do we learn about science?
20:	How is the button formed by the caterpillar just before it becomes a chrysalis? (just before it hangs down like a "j")Is it from a mouth part or an anal part?
21:	What is the deadliest bacteria?
22:	What is the difference between the 5 kingdoms? How does each one feed itself? Can any of them kill people by diseases and how?
23:	I would like to know if it may be possible for a life form to live solely on electricity.
24:	Why are there no snakes in Hawaii?
25:	On vacation in Florida I found a live Lightening Whelk on the beach. It's against the law to keep live shells. So I threw it back. Far as I could. Later that day an owner of a Shell shop told me I should have kept the shell because I probably killed it because of the throw and the shell spinned as it flew through the air. Question: Did I kill this shell?
26:	I have some hairy questions: What is the difference between fur and hair? Why is my hair growing and growing but my dogs hair does not? Why did humans loose most of their body hair while apes did not? Why did evolution make hairy creatures?
27:	Im searching for a science fair project topic and was wondering if the topic of , "Can shell fish live in anything other then salt water?" Im also trying to find a mentor to help me with my science fair project. If you can please give me some names of anybody who would be interested in helping me i would extremely appreciate it!
28:	How does catalase break down hydrogen peroxide?
29:	At what frequencies do whales hear? At what decibel amount do whales hear? How far can a whale hear something happening?
30:	How is pollination different from fertilization? Most bony fishes reproduce by external fertilization. What does it mean?
31:	Why do animal cells have centrioles even though the centrosome can function without it?
32:	How do scientists know what dinosaurs ate without looking at their teeth?
33:	What effect do varying oxygen levels have on Saccharomyces cerevisiae's (baker's yeast) production of ethanol from glucose?
34:	Why do some dogs howl when they hear sirens?
35:	My textbook says that lichens on trees and rocks can be used as indicators for acids and bases. It said that the lichens in the acid (apple cider vinegar) turns red, and it turns blue in the base (household ammonia). I tried 3 different varieties of lichens, but nothing happened. The other science teachers say that they've tried this experiment too over the years, and it's never worked for them either. Why not? (It's frustrating the text recommends a lab that doesn't work!)
36:	Why do Mitochondria need DNA? All the other organelles (except the nucleus of course) do not have their own DNA?
37:	Why don't we seen certain colors like ultra- violet etc., while other animals can? What animals can?
38:	Which cells developed first the plant cells or the animal cells? Why did nature give animal cells not the ability to do photosynthesis? We could supply some food this way.
39:	Are any types of turritella still in existence? If so, what do they look like?
40:	We learned a little bit about electoporation today in class and I was very curious to know how a cell can withstand such massive amounts of electricity without getting damaged in any way. Thank you for you time.
41:	Did scientists find dinosaur fossils all over the world or are there places(continents) where they found none? Did scientists ever found a fossil of an egg?
42:	Why don't other animals live as long as we do?
43:	My few questions that I have for the scientists at UCSB are dealing with biomimetics of the human body. My first question is what other man made structures were modeled after the way that the human body is built besides from the Eiffel tower. I also want to know how the air pumps work. I sort of know how they work now but I would also want more of the basic information like, what is it trying to mimic of the human body? How did they come up with the idea to make airpumps? It would be great if you could answer my questions whenever you could so I can complete my power point presentation for my 8th grade science project. Sincerely, Denise
44:	Our AP Bio class is studying taxonomy and how different species are grouped together. Our textbook introduces the concept of grouping everything into three domains, but it's a few years old and implies that at the time of writing it's not sure how things will end up being classified. We were wondering if there are any "kingdoms" under the domains of Archaea or Bacteria. Also, under the Eukarya domain, in addition to the kingdoms of Animalia, Plantae, and Fungi, it has several "candidate" kingdoms consisting of the other eukaryotes. Are these as yet actual kingdoms? Internet research has been confusing, as different sources list anywhere from 4 to 10 kingdoms under the three domains. Is there an "official" way of classifying things as of yet?
45:	I would like to know more information about why is there bacteria in the Santa Barbara creeks?
46:	Do all living things go through photosynthesis?
47:	I am currently working on a science project for a county competition. I was wondering if you could either direct me to someone who could help me in the subject that I am working on or provide some information that could help me if you had the time. I was developing the idea of testing what variables change reproduction rates in bacteria or mice. In this experiment a control would be normal conditions and the rate of growth in these conditions. By limiting food or developing competition / a destructive event, you can measure how these variables can effect reproduction. What seems most interesting in this experiment, though, is what might happen if it would be applied to mice. It can be tested whether or not mice would still reproduce if there was lack of food creating an environment that cannot support more than the number of mice already present.
48:	Dear ScienceLine, I have a project idea that has to deal with mice and/or bacteria and what factors may lead to lower reproduction rates. The main idea in this experiment is to see if the organism will reproduce even when there is too little food to support the offspring. I will not do any testing in mice, but will definitely be testing bacteria. The question that I have now is whether or not it would be better to work with fruit flies or worms. The main reason why I was considering mice before was the fact they probably have a higher thought process than other animals that can be tested. I was wondering if fruit flies or worms would react in a similar way or if I should just test both.
49:	What could be the qualities of fruit flies, bacteria, and mice that made them well-suited to modern genetics research?
50:	I tried to do some research on what cause the different mass extinctions. I know there are different theories but I only found concrete info on the 65 million years ago extinction. What was the cause of the 245 million years ago mass extinction? Thanks.
51:	Do bugs have blood or what is the liquid called they have? Houseflies seem to have blood but other bugs seem to have rather a greenish or yellowish liquid.
52:	Why do dogs or wolves howl at the moon when it is full?
53:	Hello, I'm doing a fruit fly experiment dealing with P2 flies and eye color characteristics (red and white). My problem is that I don't understand how to figure out the punnett squares. I'm confused, how do I know what future flies I can be able to predict? What does F1, F2, P1 and P2 mean? Why are they important? All I have been doing is counting flies and differentiating their sex the first time I had 2 red eyed females and 2 red eyed males, then I had 5 red eyed females and 4 red eyed males, the third time I had 11 red eyed females and 2 white eyed males, yesterday I had 20 red eyed females, 15 red eyed males and 8 white eyed males. Can you please help me get it together?!!!!!!!
54:	Because Crocodiles can see and breathe underwater, does that mean they have gills or do they have some other respiratory system?
55:	Can an otolith tell a fish's age?
56:	How does a virus or bacteria enter the body?
57:	Are pandas related to bears and are raccoons?
58:	Is fire alive? It moves, it feeds on oxygen, but it doesn't think or know where it is moving.
59:	Do cats have belly buttons? If not, then how do their offspring get their nutrients?
60:	We are studying cells. I am wondering how scientists found out that the mitochondria are the "powerhouses" of the cell. How did they discover what each organelle does?
61:	In lactic acid bacteria, where does malolactic fermentation/decarboxylation take place? What are the steps for the reaction?
62:	Since viruses are always changing, will we ever find a cure and if so how long?
63:	Why do cats and dogs not get along?
64:	Why can dogs only see red?
65:	Hello. How can it be possible for an organism to survive living a intermediate state of evolution. Like bats, was there a point in their evolutionary process where they had small wings? I hope you understand my question, because it's the best way I could write it. Thanks.
66:	I am a student working on a research project through the Santa Barbara Museum of Natural History. My project is on intertidal succession and settlement. I am observing what settles first on different substrates and seeing if organisms prefer certain substrates. My ideas for substrates are shale, plastic (represent PVC piping used in oceans), steel (represent ships and oil dereks), and the artificial reef at Goleta Beach. I am wondering about intertidal settlement and what organisms would be good to possibly observe. Thank you.
67:	We know the number of chromosomes an organism has is unique to that organism. For example, we (humans) have 23 pairs, but if we had 12 pairs we might be a cherry tomato or something like that. Since there are millions of species, are there many organisms that "overlap" chromosome numbers - what other species have 23 pairs?
68:	How long does it take for a completely new species to form?
69:	Do horses see in color?
70:	How long does it take a frog to develop?
71:	Why did large animal evolve in nature? Aren't they kind of useless like too big need lots of space and food?
72:	Why do certain bacteria change color at different temperatures? Is this an evolutionary strategy?
73:	Serratia marcescens is red at 25 C and white at 37 C. I did an experiment and checked it in a book. I know that this is due to a pigment. But, if the colonies thrive at both temperatures why the change in color? Is one more helpful or protective?
74:	How do different biome affect population ecology?
75:	What are the health and safety requirements when teaching microorganisms to students? A student in our school has fungi and bacteria (from children's coughs)in sealed plastic petri dishes and they have been there for a couple of weeks - is this allowed/safe? The Y 6 teacher has concerns.
76:	How do membranes become more permeable to ions?
77:	We've learned that microbes, and specifically bacteria, can live almost everywhere - even in extreme environments. We are wondering, can microbes live in a vacuum? In outer space? In a black hole?
78:	What makes people ticklish?
79:	What kinds of organisms live on algae?
80:	Do rabbits have the same taste buds as humans? Does something sweet to us taste sweet to them? How would it possible to find out?
81:	If the sun's light peaks in the green, why do plants prefer to reflect green light (giving them their green color)? And in particular why do they prefer to absorb red light and with that not efficiently utilizing the sun's radiation?
82:	If a virus and a bacteria were introduced into an environment of pure oxygen, would the virus be able to reproduce via the bacteria? Does this only occur with certain types of viruses and/or bacteria? Would the virus, bacteria, or both die off(either way)? Would they be able to live in harmony even if the virus didn't reproduce via the bacteria? Or would they both die off?
83:	Hi. I was wondering, with all the talk about mad cows and it's impact in human health. If prions are proteins, and proteins denaturalize with heat... how can it be possible for a prion to "infect" (I don't know if the term infect can be applied to prion diseases) a person who has eaten an infected (yes, again) cow, or sheep or another animal? I was wondering this because in several web sites I have found the same information, but like any science student I'm skeptic. Please explain. I know my English is kind of lame, sorry, but my only English teaching resources are books and the Simpsons. Thank you -Diego Delgado
84:	How are animals classified ?
85:	For a person with allergies to dogs and cats would it be possible to have a Chihuahua?
86:	How do heterotrophs live?
87:	I've heard that according to Darwin's theory of evolution Man and monkey have a common ancestor is this true and what is this ancestor?
88:	Hi, I am doing a science project on temperature sensitive color changing bacteria. It is centered around Serratia marcescens, a bacterium which grows red at 25 degrees Celsius, but loses its pigmentation ( prodigiosin is its pigment) at 37 degrees Celsius. I need to know what the cellular substances that control pigment formation and are regulated by temperature are. I would greatly appriciate your help on this, and also any additional information you have about Serratia marcescens' color changing circumstances. Thank you very much, Caitlin.
89:	Hi, I am doing a science project with bacteria and I have another question. Are there any circumstances besides temperature that will cause a bacterium to change or lose its pigmentation?
90:	We've learned that all arthropods have a tough outer covering called an exoskeleton. However, we have also learned that some arthropods, such as "honey-pot" ants and ticks actually expand as they collect honey or blood in their body. Is the exoskeleton able to expand? Do these organisms have a different type of exoskeleton that other arthropods?
91:	Can you tell me the animals with the strongest stomach acid? Can you tell me what these animals can digest as a result of this stronger stomach acid?
92:	What are archae (or archaebacteria)? How do they get their food? Where are they found? Are there any good websites for students about them?
93:	How is silk made?
94:	In our textbook, there is a picture of a sea star with four small, nubby arms and one huge arm. The caption describes how a sea star can regenerate to grow into two new sea stars if it has part of it chopped off. However, assuming that the huge arm was chopped off a huge sea star, how does it (the arm) eat / get rid of wastes while it is growing back the other four arms. Wouldn't a chopped off arm just die?
95:	why can dogs hear so much better than humans?
96:	Yesterday my teacher saw a lot of robins, between 50-100, all standing still facing the south as if at attention. They were not moving for several minutes. Can you explain this? We had some severe weather later in the day and evening that included very high winds and according to the weather maps, the storms were from the south. Is this related?
97:	I have spiders in my house that may be Brown Recluse. I've been trying to identify myself, but really need a high powered microscope to see the 6-paired eyes and markings. Can you identify in your lab? If not, do you know where I could take these to be identified? Any assistance would be appreciated! Patty Leis
98:	How does wild dogs hear differ from domestic dogs hearing? Do wild dogs have a different hearing copasty then domestic dogs? Can you send me a diagran of the inside of a dogs ear?
99:	My dad told that when low pressure system moves in (like before a storm) some animals reduce their activity. He said, that some people thought that this was natures way of making animals bed-up to be safe before and during a storm , it this true.
100:	Could we use sea sponges as monitors for pollutants in water? If so, how?
101:	How does water temperature affect the rate of starfish limb regeneration?
102:	If you see a baby bird on the ground, is it OK to pick it up and put it back in the nest?
103:	How do starfish create new limbs?
104:	Why do whales and other sea mammals breach?
105:	How do mimic octopuses learn how to mimic other sea creatures?
106:	I live on St Croix. Why are there no shark attacks here, but a lot in Florida. People say that the sharks are smarter. My aunt in Florida says that it is because there are fewer people in the water. But there are no shark attacks as long as anyone remembers. I think it is because the water is clearer so that we are not mistaken for food. Or maybe it has something to do with the reefs. Please let me know. Thanks, Ryan.
107:	Do flies remember experiences gained as larvae?
108:	Will scientists ever be able to clone human organs by growing them inside other mammals (like pigs)? If so, wouldn't the animal's antibodies attack the human organ? Thank you for your time.
109:	If the magnetic field of the earth flips from time to time do we know when it will happen again? Do we know when it happened last time and how do we know that it happens? Also, we learned that many animals depend on the magnetic field of the earth to navigate. What will happen to them when the field changes? Will they one day just wake up and fly in the wrong direction?
110:	I am researching the Riparian Brush Rabbit. What phylum and class are riparian brush rabbits in? Also, what is a historic population of riparian brush rabbits before 1990?
111:	I am researching the Point Arena Mountain Beaver. (Aplodontia rufa nigra) I know that there are fewer than 500 because of poisoning from weed killers, habitat loss, killing by household pets, timber harvest,agricultural harvest, and alien plants taking over native plants. Many animals have similar problems to this, but they are not as endangered. How come there are so few of them?
112:	Hi. My name is Parisa. I am a seventh grader at Santa Barbara Junior High. I am doing a research report on the blunt-nosed Leopard lizard (Gambelia Silus). A part of what we have to do is to e-mail an organization. So, I have a couple questions for you. My first question is how long have blunt-nosed leopard lizards been around? My second question is what kind of environment does the lizard live in? Thank You, Parisa P.S.
113:	Hello, I was wondering, do Fresno Kangaroo Rats (Dipodomys nitratiodes exilis) have a subspecies? Everywhere I looked they said not certain or unknown. Thanks again!
114:	Hi, my name is Sophie Gantz and I am doing a report on the bighorn sheep (Ovis canadensis) in my 7th grade science class taught by Ms. Kluss. What I was wondering is how come instead of living in separate packs, how come the male bighorns and female bighorns do not live together? Thanks for your time.
115:	Hi. My name is Chase Melton. I am a seventh grader at Santa Barbara Junior High School. I am doing a research report on the Desert Slender Salamander (Batrachoseps aridus). I would like to ask you some questions. How long have Desert Slender Salamanders been living for? How much they weigh? Thanks for your time.
116:	Hi! My name is Kimi Van Wickle. At Santa Barbara Junior High School I am studying the San Joaquin Kit Foxes(Vulpes macrotis mutica). I have a a few questions that I would like to ask. How long does the average San Joaquin Kit Fox live without human interference? How long does the average San Joaquin Kit Fox live with human interference?
117:	What was the range of the Santa Cruz long toed salamander when it was first discovered? Please reply before Thursday.
118:	What is the current and historic range of the California Red-Legged Frog?
119:	What are the historic and current populations of the Mission Blue Butterfly?
120:	Why do leopards have spots?
121:	Do animals see one color?
122:	For my 8th grade science fair project I am going to run mice through mazes. To make it a little more interesting I am going to put a pulsing sound at the end to see if the mice can find it any faster than without a sound. So I was wondering if you had any research on the way mice hear?
123:	At my school we are learning about the cell and the cell parts. My question is, after the Golgi complex takes out the bacteria and the bad things from the cell, where does it go next? Is there still more systems in our body that desteroy's bad things that comes out from the cell? Thank you.
124:	How many spots do leopards have?
125:	Is evolution real?
126:	To hatch an egg, why does it have to be warm? Why cant it be room temperature?
127:	How do bugs live with a little heart?
128:	How does an animal cell survive?
129:	What are some ways animals use colours?
130:	Are Serratia marcescens chemoautotrophic or photoautotrophic?
131:	How do scientists know that dinosaurs were not bright colors?
132:	What does Ecology mean and what is the difference between Population and Community?
133:	How does cloning work? And why would someone want to be cloned if they themselves wouldn't be looking through the eyes of the clone?
134:	Where do coral reefs form? Do coral reefs form at a quick or fast rate? Do coral reefs form as an everday thing or at a special time?
135:	What is the oldest bug?
136:	How do small animals protect their young?
137:	How many species are on the Earth?
138:	What is the support system of a spider?
139:	Hi! Do birds excrete urine? I really don't know if they do and me and my friend were pondering this the other day!! Thanks so much, have a great day!! :)
140:	What is the average size of the California Garibaldi fish?
141:	What does the Opaleye fish look like and where can I find some information on it?
142:	What is the average length of the Oxyjulis Californica (Senorita)? What is the color of the Oxyjulis Californica, and what region is it found in the surrounding waters?
143:	I am doing a report on the California rosy rockfish. Would you happen to know it's Latin name, it's behavior, and some interesting facts? Thank you!
144:	I am doing a report on the California Sheepshead. I want to find out size and weight of adults and juveniles. I was also wondering if you could give me some detailed information on their habitat. Thank you
145:	Is there any animal that during its evolution it was first able to swim, then it evolved to a walking animal, and finally was able to fly?
146:	I have some questions about hearts: 1. I am confused about the hearts of insects. Are they just a smaller version of our hearts? Is their heart also mainly a pump? 2. I heard that there are artificial hearts. Are these more or less pumps that pump the blood through our body? How can they regulate the blood flow? 3. Also, what kinds of batteries are used - I am assuming that the pump needs energy somehow. 4. If the artificial heart is made of metal and plastic parts will it then be less susceptible to be rejected from the body in contrast to an organ transplant?
147:	Can you tell me if it is real that mice can scare an elephant? This is the case in the books that a read and the videos that I watch. I want to know if this is just fantasy or it is real from the Biology point of view.
148:	Can someone be as small as 1 inch?
149:	Why do Shrimps turn red when the are cooked?
150:	Why do dogs bark?
151:	Are there any fairly large non-plant organisms that reproduce asexually (fairly large meaning at least 2" by 1")?
152:	Why do spiders spin their silk. Why don't they just make holes in the ground and set trap to catch their food. It would be much easier than taking all day to spin a web.
153:	Why is it that dogs and cats that are reared with humans cannot learn to understand english like babies can ?
154:	Will the anti virus drugs (I heard that people buy them in Europe) help against the bird flu virus once it spreads to humans? 2. Would a person have to take this medication until the threat is over, even if this is for month or years? I am wondering because I think that the drug does not give you immunity like a vaccine would. 3. Also, how fast would scientist come up with a vaccine after an outbreak or can they already work on a vaccine with the information they have from the virus that already killed people? Thank you very much.
155:	The bird virus is called H1N5. Does anyone know what the numbers and letters mean? Why does a virus attack only certain species, like this one only birds? Are our cells not very similar in function? Thanks
156:	Are there any organisms that are decomposers, producers and consumers?
157:	Why can't penguins fly?
158:	Why do we need beetles?
159:	What was the 1st living thing on Earth and is it still alive today?
160:	Why do fish live in water if they breathe from air?
161:	How come whales can hold their breath longer than most mammals?
162:	Why do slugs have 4 noses?
163:	Why do viruses attack other cells? They are not alive, so how do they know what they want to do?
164:	Are plants important to animals?
165:	How can animals help plants reproduce?
166:	Why do humans have fingers and toes? Are their scientific name phalanges?
167:	Why do we have fingernails?
168:	What is in Carbon Dioxide that can kill you?
169:	What is silk made from and how ?
170:	Why do humans have to cook their food when animals can eat raw meat without any side effects? Thanks
171:	Do fish have spongy bone with bone marrow that produces blood cells like humans? I found that sharks produce blood by the spleen and another organ called the Leydig's organ. But I couldn't find anything on how fish produce blood cells.
172:	I was wondering, if the lion is the strongest animal in the jungle, who is he afraid of? Do other animals eat him?
173:	Why do dogs whimper instead of crying tears?
174:	Are spider bites common? When my mother finds an itchy bump on my skin, she often claims it is a spider bite. But my father says that spiders don't bite people very often and it must be something else. Thank you
175:	Can you tell me the name of the animal which has inch length and pink color; it has antennas, no legs and crawls like a snake? The antennas are half inch long. I would appreciate to have photo and name of it.
176:	Were Adam and Eve the very first people on Earth? If they were, were the dinosaurs living or were they extinct?
177:	Do elephants cry?
178:	What makes a snake's venom dangerous? Why are some venom that do not kill humans and others do?
179:	What makes a cat get worms inside its body and get sick?
180:	Are there any snakes in Hawaii?
181:	Is it true that wolves really howl at the moon when it is full?
182:	We guessed that Reindeers eat: hay or grass, carrots, and apples. Is this true? What other things do Reindeers eat? Can they really fly? Where do they live? Thanks for your help!
183:	What happens to the small and large intestine for at least two days?
184:	How do reptiles regenerate their body parts? Which parts do they regenerate? How do they do that? How many times? When?
185:	Why are dogs the only animals that can see in black and white?
186:	Why are people and dolphins the only mammals that have sex for pleasure?
187:	What causes evolution?
188:	What came first the chicken or the egg?
189:	What are the ends of bones covered with? Where are immovable joints found in the human body? What kind of joints are the knee, toes, and fingers? Which vitamin is made in the skin? Where is dead skin cells found?
190:	Is the giant squid still alive?
191:	How many plants are there on the planet?
192:	What is a smell? How does your body recognize a smell?
193:	What do cells come from?
194:	How can chickens lay eggs?
195:	How do caterpillars make the cocoons?
196:	Will we ever be able to bring back dinosaurs like in Jurassic Park using DNA?
197:	Why do birds migrate south?
198:	What are some backgrounds that scientist use mice for? Or what can mice be used for in projects that scientists/people use them for?
199:	What are scientists currently looking at to find treatment for Down syndrome?
200:	How come birds don't get electrocuted when they sit on the telephone wires?
201:	How come owls see at night?
202:	Is it possible to grow your DNA back after sexual reproduction?
203:	I have three questions. Question A: Do ants sleep? Question B: How big is a queen ant? Question C: How many baby ants does a queen ant have in year?
204:	I am trying to find out the name of a bright orange, dust-like lichen that grows on oak or pine trees in the uk. Can you tell me what it might be? It doesn't have a visible structure like other lichens.
205:	What kind of leaves do silkworms eat?
206:	What is the scientific name for roly-poly?
207:	What is the difference between cat's eyes and owl's eyes?
208:	How are birds and dinosaurs alike?
209:	What is the most important thing do once a new specie or animal is found to be endangered?
210:	I am doing a research report on the Desert Tortoise. What are the historic and current populations? What are the historic ranges? What is going on to help protect the Desert Tortoises? Thanks!
211:	I am a student at SBJHS. I am doing a research report on the endangered California Tiger Salamander. I was wondering what the historic and current population of the species. Thank you.
212:	Could you please tell me the historic and current populations of the San Clemente Sage Sparrow for an endagered species report I am doing?
213:	What is the current population of the point arena mountain beaver? I am doing a report on them and the most recent I can find is from 1997
214:	I am doing an endangered species report on the California Freshwater Shrimp. I was wondering what the historic and current populations were.
215:	In science class, I am doing a project on the Western Snowy Plovers. I was wondering what the current and historic populations of these animals was. I also had a question about what sites/groups/people are taking care of these animals and what they are doing to prevent the Snowy Plovers from becoming more endangered. Thank you for your time and help!
216:	I was wondering if you could think of any way that science could help us with a bird problem? There are barn swallows that make a mess in our shop and we would like to get them out.
217:	What method do scientists use to count the number of species within a population?
218:	I have two questions: A. Did trilobites have predators? B. What did trilobites eat?
219:	Why is it so important to protect all species? What would happen if all animals survived?
220:	I am doing a research report about the bald eagle, can you possibly tell me the current population of bald eagles in California and possibly send me a map.
221:	What do roly pollies eat? How many legs do they have?
222:	Does a zygote have a diploid chromosome number?
223:	Why is it that dogs and other animals can eat raw meat but humans get sick if they do ?
224:	How many kinds of animals are there?
225:	While riding my bike I noticed these remains (pictures attached) in front of Dos Pueblos High School. Could you tell me what kind of animal this is? Could it be a bobcat or a baby mountain lion? Picture 1 Picture 2
226:	Did Sea Scorpions eat any kind of Trilobite?
227:	Are birds reptiles?
228:	Why is T-rex extinct?
229:	How long is one guinea pig year?
230:	Can we keep roly-polies (pill bugs) in our house?
231:	We will be looking at newton's 3 laws around Halloween. For the 2nd, f = m x a, I would like to construct a giant spider web and give some force facts about spider silk and webs. How strong is spider silk? How strong is a spider's web? How much force can silk withstand? How much force can the whole web withstand?If you have any more ideas for the holidays, please send them! Thanks, Joan.
232:	I am aware that cells are differentiated into their particular functions. Furthermore, cells reproduce constantly. However, how do these cells "know" where their "cosmetic boundaries" are? For example, why don't your lip cells reproduce right into your cheek area? Why don't eyebrow-producing epithelial cells grow hair up into your forehead?
233:	Why do dogs go around in circles before they go to the bathroom?
234:	Are marshmallows somehow made out of pig skin or any animal? What are they made out of?
235:	I just found a Western Corsair (Rasahus thoracicus) in my bed! It was flying around in my room, flitting up near the light. It then flew down on to my bed. I looked it up in my Insect Field Guide (Audubon) and at first I was very disturbed because it resembled a conenose bug. I read that they bite humans in the night for blood, and in fact I did have a few bug bites on my arm a couple of weeks ago which I thought might have been caused by spiders. I then searched the internet and found out that it is a western corsair because it has a very distictive orange dot on its otherwise black wings. I'm wondering if this western corsair is dangerous. I read it has a nasty bite that can be very painful. I also read that it eats other insects. But does it suck blood like the conenose bugs? Please let me know what you think. Thank you very much!!!!!
236:	Are animal behaviors different from a person's behavior?
237:	What is the difference between toothed whales and dolphins?
238:	Why are skin cells undergoing mitosis continuously?
239:	Why dose blood turn red when it touches the air?
240:	How can chameleons change color?
241:	How long do butterflies live?
242:	What is the difference between venous and arterial bleeding?
243:	If flies see many small images, how do they know what direction the danger is coming from (and what direction to fly away in)?
244:	How thick is an eggshell?
245:	We learned on a video that there is one T-cell and one B-cell in your body to match any virus, and if they saw their specific virus, they would start an immune response. We also learned that all cells divide by mitosis. So, how do T & B cells divide if there's one specific cell for each different virus? Does one of the two new cells die off, or does one match itself up with a new virus? Do these cells live forever, like brain cells?
246:	How many dendritic cells are there in the body? About how long does it take a dendritic cell to carry the virus protein around and find the specific T-cell it matches?
247:	I saw a video on the internet, that claims a cricket infected with a Parasitic Gordian worm is forced to "commit suicide" by jumping into a pool of water. How can a parasite do that?
248:	Does your blood type alter the speed of all your organs working together or does it not matter.
249:	How many living things are there?
250:	How did the first living things get life?
251:	During mitosis demonstrations - books, videos, and other instructional sources always show the two nuclei separating; but they never show the mitochondria, endoplasmic reticulum, or other organelles replicating in the process. It would be greatly appreciated, for my class and my understanding of the concept if you could answer this question. Thank you for your time and knowledge.
252:	How are the gametes different from other cells in the body?
253:	How does the endocrine system work in regards to nutrition and metabolism?
254:	How does memory work?
255:	If cockroaches can withstand extreme radiation, then why is it that they can't live through certain pest spray?
256:	Whilst on holiday in the Verdon Park in France, in February, my wife and I saw a line of 27 Caterpillars all moving very slowly nose to tail across some stony ground about 1000m up in a forested mountain area. If I could find a way of making an attachment I would send you a photo. We would like to know what species they might have been and why they should be behaving in this way. What advantage could it be to their survival that they move in a line like this? Many thanks for your help. caterpillars's_picture
257:	Does radiation cause mutations
258:	I'm doing a science fair project on magnetic reversals and their effects on animals . Is there a simple experiment that I can do to represent that?
259:	How does tidal fluctuations effect starfish?
260:	Hi! We have been studying animals and I am researching beetles. I am wondering if all beetles have suction cups on the bottom of their feet? Thank you. I hope to hear from you soon.
261:	We are learning about cnidarians and their nematocysts. My question is: can they sting each other?
262:	On a walk that we took in the mountains (about 1000m - 1500m) of the Verdon National Park in France, in February, in several places we saw a clump of what looked like light green leathery shells. They looked a bit like pumpkin seeds or big lentils. They were about 1cm in diameter. Sort of disc shaped. In a clump there may have been 30 or 50 of these "shells", loosely stuck together in a kind of clear slime that looked a bit like saliva. Some of them appeared to be opened that is two halves (upper and lower) of the disc had split away from each other. Often they were lying on gravel in the sun and were not hidden under any vegetation. I regret that I did not take a photo. I have searched the internet looking for photos of lizards' eggs, as I thought this is what they might be. However I am not at all sure. If you have any wildlife expert who could tell us what these might have been I would be very grateful.
263:	What dinosaurs lived the longest?
264:	On the endangered species scale, what does "EW" stand for?
265:	On the conservation status thingy, how many of the species does there have to be considered each level of endangered-ness?
266:	Sorry about so many questions (answer all them at once, if you want), but I am just naturally curious. Where does a spider get its silk? Because when I read "James and the giant peach," the spider said she was "running out of silk" PS-I love your web site!!!
267:	How does your hair keep growing?
268:	How does anesthesia make you not feel anything?
269:	Why dont most people have blue eyes?
270:	I have heard that there are two main theories to the evolutionary origins of life, RNA first and metabolism first, can you give me some information on both?
271:	If there is a sickled blood cell in your blood stream, what would happen to your body?
272:	I want to either be a vet for marine mammals or at least work with them. Is it better to major in marine biology or zoology? [Also, is there such a position/need for a marine vet/what would that entail?]
273:	Do sharks get sick?
274:	What are the three branches of life?
275:	Do cells have brains?
276:	What would happen if a red blood cell was damaged?
277:	What would happen if a skeletal muscle cell were damaged?
278:	We have one koi and about 14 fish that are comets or goldfish in a swimming pool converted to a pond. They are about 5 inches or so long at about 1 year of age. Very robust and active. Four of them are basically white. Of the four, two have some deep orange spots naturally on them. I just noticed today that the white on the fish is turning a washed out yellow/orange color. They were seemingly pure white before. Now fins and head particularly are turning organish. I'm worried about their health. One website that sells koi food says this is due to liver function. Can that be correct? If so, what do we change? We are feeding Tetramin and a special koi food. We are in Hawaii so the temperature is in the 80's. Full sunlight on the pool. The pool is about 15,000 gallons with deep areas at 8' on one end. The water is not filtered, aerated or treated in any other way and is very green as my husband is under the impression that it is a large enough body of water to not need extra care. We have two water hyacinth plants in with them. The fish eat the fish food, algae and bugs that fall into the water. The comets/goldfish we bought were sold as feeder fish" and we put them into the pond when they were only a few inches. They are now robust in girth, about 5 long in the body and very active. But I wonder what this symptom may mean in terms of nutrients and water quality?
279:	What types of bacteria are found in the home: such as in the bathroom or kitchen?
280:	What physical ailment can happen to the red blood cell?
281:	What makes the banana spider silk so strong? What makes up the spider silk?
282:	Why do fiber make you go to the bathroom?
283:	To make genetic mutations do you have to change DNA or RNA? Why?
284:	How does Photosynthesis help animals survive?
285:	Can animals like cats and dogs even comprehend something like math? I heard a story once about a horse that could stomp it's hoof as many times as the number you held up with your hand, but it turned out that he could just tell when you tensed up and would stop there. I also heard this theory once that there was nine dimensions other than the three dimensions that we see and that it was impossible for the human brain to even comprehend it. I'm just curious if animals with less developed brains than us can or can't comprehend some of the advanced things that our brains can. Thanks,
286:	When you fracture a bone, what happens to the bone?
287:	Why do youn cry when you are hurt or sad?
288:	What will happen to our Nervous System if we have lost our ability to see?
289:	Why can we be paralyed from the waist down after a stroke?
290:	Are there skunk problems in Santa Barbara?
291:	Do skunks get accidentally killed?
292:	What impact do skunks have on humans?
293:	What are the skunk's worst enemies?
294:	Are skunks bothering people in Santa Barbara?
295:	We learned that breast milk helps develop immunity in infants. Do these antibodies (from the mother) stay in the baby's body for his or her entire life? Or does the immune benefit only last until the baby develops its own immune system? Also, if a baby hypothetically breast fed from multiple women, would he or she develop a more comprehensive immune system?
296:	I heard that antibodies are passed on from mother to child. Do antibodies get passed on through more than one generation? I mean, even if I breast feed my future children, will they still be missing out because I was not breast fed myself?
297:	How was earth created and how did life begin on this planet?
298:	Where are mature T lymphocytes after disappear the thymus?
299:	Why nerve cells can't reproduce?
300:	Why are you not crushed by atmospheric pressure?
301:	Do you get different cells everyday?
302:	Do Siamese twins share the same brain cells?
303:	Can you be alive with no cells?
304:	How can a skin cell change to a nerve cell?
305:	One day I read this article and it said that cow farts are the number 1 cause of global warming is that true? If so, why?
306:	Is there any scientific evidence for the existence of Pegasus?
307:	What types of cancer does sun exposure cause?
308:	How do marine invertebrates decompose in the ocean after death? I am working on a science project related to taphonomy and the decomposition of soft bodied invertebrate ocean specimens inside of alcohol jars for laboratory research. Could you help me?
309:	How do animals decompose? How do the cellular tissues break down? I am working on a science project related to taphonomy and the decomposition of soft bodied invertebrate ocean specimens inside of alcohol jars for laboratory research. Could you help me?
310:	Are you smarter if you have a bigger brain?
311:	how does a boy/girl get different sex organs than each other
312:	Why do people have tissue to support their bones and joints?
313:	What does DNA mean?
314:	I want to feed different snakes dead rodents and time the difference in time of eating. Is this too gross?
315:	What is a chromsome and what does it do?
316:	What helps cell divide?
317:	How many times a day does a cell divide?
318:	What is some evidence for evolution?
319:	There has been a lot of studies to show the numerous benefits of taking soybeans. However, there are also claims that taking a lot of soy may cause tumour in the body and may make a man more feminine. To what extent are these claims true?
320:	How many species related to dinosaurs are left in the world today, and where do they live?
321:	What will happen when a fertilization occurs?
322:	What will happen when a fertilization did not occur?
323:	Hi, I read an article the other day about an artificial retina that nanotechnologists have recently created. I really liked it and all, but I was wondering how something like that could work. My sister who is in college now told me about brain input and output signals that are recived from electronic sources, such as the artificial retina. How would a blind person be able to "remember" what they saw with the artificial retina? If the artificial retina does not have direct contact with the part of the brain that stores information, how is seeing something, and (knowing you have seen it) possible?
324:	I live in Arizona where it does not rain very much. When it rains, I can hear frogs croaking. Where do the frogs live when it does not rain?
325:	If you fell in love with UCSB but want to be a vet, is UCSB a good place to tranfer to? I know that UCD has an undergraduate program for animal science and a graduate program. Would it matter if I transferred to UCSB instead of UCD, even though UC Davis is known for their animal science major?
326:	Why do lizards do "push ups"?
327:	My class and I are wondering about conceiving twins. They are wondering about the genetics of it. Does this usually go through the mother's side, father's side or both? What are the odds of conceiving a set of twins, either fraternal or identical? Do all identical twins share an amniotic sac or can they have separate ones? Thanks!
328:	How long does it take to pickle an egg?
329:	Does your heart really stop every time you sneeze?
330:	What is carbon monoxide poisoning and why is it lethal to humans? What is the chemical reaction that occurs in the body when carbon monoxide is inhaled?
331:	How does noise pollution from traffic affect the environment? What animals does it specifically affect?
332:	Why is it that chicken meat is white, pig meat is pink, and cows meat is red? Does diet play a factor?
333:	Hi, my name is Vincent Siefe and I am a student at San Marcos High. I am currently doing a small repot on bitotechnology, within the subtopic of microbial biodegradation. Most of the books and sources I have found dive into too much scientific detail which I can't understand. So I have some questions. 1. I have found that microbes have been used to break down chemicals and pollutants in the earth. Yet can they be used for other environmental technological applications? 2. Do you know how these laboratory processes came about? 3. Could you recommend any sources? Thanks for the help
334:	1. What is the difference between biodegradation and bioremediation?
335:	Why do only Eukaryotic cells have nucleuses?
336:	What are the main functions of the lymphatic system?
337:	How carbon dioxide is carried in the blood?
338:	What is the technique of using artificial kidney?
339:	Do cells attack each other? If so,Why?
340:	What does the Flagellum help in a Prokaryotic cell?
341:	How do you know that the cells in your body are alive?
342:	Is eating glacial ice bad for you? I was told that if you eat ice from a glacier it will make you very sick as it has micro organisms in it. Is this true? Thank You
343:	"What is the evolutionary reason for people to be tickled?"
344:	When putting your finger through fire, why doesn't your skin burn?
345:	Is it the actual mold or the mold juice that is used to make antibiotics?
346:	Is there anyway to make yourself dream more frequently?
347:	Are there known toxic environmental or human side effects of either producing or consuming artificial sugars?
348:	How you scientists would define the words genes, genetics, and heredity?
349:	In the field of Genetics, what does it mean a trait and hybrid?
350:	I would like to know what is an allele?, what is a recessive allele?, and what is a dominant allele?
351:	How fast do nerves send signals to and from the brain?
352:	Why do peoples hair change colors when the get older?
353:	Whats the original shape of a dinosaur?
354:	Why is it when you mix a white mouse with a colored one, it comes out with a different color?
355:	How does the releasing of dopamine in the brain cause people to feel good?
356:	How do animals camouflage?
357:	Why do you have red blood cells couldn't they be any color or are they red for a specific reason?
358:	Are polar bears being extinct and why?
359:	If one were to have a iron content in their blood, would they be more likely to become electrocuted or possibly would you have a worse effect from an electrocution?
360:	Are there centrioles in both plant and animal cells?
361:	Why do snails bubble when salt gets on them? do they die? if so why?
362:	If you only expose a goldfish to light for 3-5 minutes each day, will the pigment be affected? If so, why is it changing, what color would it most likely be if it's an all-orange goldfish, and how would it change the pigment?
363:	Where do Wild Wolves wander?
364:	Dear UCSB, My partner and I are conducting a science fair research project on Lichen and how it can be used to date man-made stone structures, Particularly Knapp's Castle in Santa Barbra. We were wondering if elevation affects Lichen growth?
365:	I am trying to attract bees to different colors (honey will be on the paper). What type of bees are in my area (Buellton, California)?
366:	Dear scientists, My question has to do with animal testing. One of the common reasons I hear for testing on animals (specifically dogs) is because they offer a good indicator for the effects of the make up for humans. However, why would dogs make good indicators due to the fact that they are a different species and that they have fur all over their face? Thank you for your time.
367:	If Darwin's theory states that humans evolved from monkeys, why are there still monkeys?
368:	How can fetus or adult stem cells be used to develop organs? Have there been experiments conducted using stem cells? How can a stem cell be removed, without endangering the life of the fetus?
369:	What type of honey bees live in my area? What color are they most attracted to? Can they see color?
370:	Why do some animals have actual babies and some have eggs?
371:	I am confused about how light works, and "invisible light" works. How do we not see certain types of light? Thanks!! -Samantha
372:	Is there any way to prevent genetic disorders such as Down Syndrom from happening?
373:	When the earliest organism grew, did ti go extint after new ones grew?
374:	How does hand sanitizer kill germs?
375:	What do animals have,that we don't have?
376:	Are cells a big part of our bodys?
377:	What is the venom type in a Western Diamondback Rattlesnake and what chemicals in the venom cause the body to practically breakdown?
378:	It has been said that some polar bears spend part of the year on land in warmer climates. If this is the case, then why can't we move the polar bears that are drowning in the arctic climates, due to melting ice caps, and bring them to the land to adapt like some polar bears do year around?
379:	Did people exist during the dinosaur times?
380:	Do male and female grow at different rates?
381:	Does your eye color affect your eye sight??
382:	We need to test lead on slugs or some other form of invertebrates. How can we do that? What sort of behavior to look for? Lead is a neurotoxin, so we assumed the response to the lead would be some sort of behavioral problem like loss of appetite or less movement, but we are not sure. Thanks for your help!
383:	Why are whales so big?
384:	Why are sea turtles almost extincted ?
385:	How do antiseptic soaps work?
386:	How does lead poisoning affect the development of babies both while they are in the womb and after birth? Thanks!
387:	The theory goes that mutation is the raw material for evolution. Existing sequences of DNA, some of which codes for functional proteins, other sections dont, have random changes in their nucleotide sequence over time, that may persist and dawn reproductive advantage onto carriers of that gene. I know that changes in the nucleotide sequences of the same gene have been observed across species, like in the genes that code for polypeptides in cytochrome C and hemoglobin. Based on this evidence a sort of evolutionary time line can be developed to show how far back organisms diverged from a common ancestor by comparing the numbers of differences in nucleotide sequence. In the study of genomes thus far, is there any evidence that suggests a related sequence of nucleotides that result in different functional proteins? Not all organisms have the same proteins, so wouldnt we expect to find that when we find a novel protein on the evolutionary tree, that the nucleotide sequence that codes for that protein would be analogous or similar to a the sequence for a different functional protein? I havent come across anything on this front and was wondering what the experts know. Thanks and I hope you have lots to be thankful for! Sincerely, Bret Klopfenstein Ventura HS
388:	Can you please tell me the digestive timeline for protein, fat, and starch?
389:	Why does the sun turn skin darker, but hair lighter?
390:	How does self-tanner work?
391:	How are scientific names developed?
392:	How do scientists figure out what parts of the brain control what?
393:	What elements are present in the body?
394:	What makes asbestos toxic?
395:	What causes poison oak to irritate the skin? What does that have to do with chemistry?
396:	My family and I are on the Feingold diet. We do not eat foods containing artificial colors and dyes because we believe they have negative health/behavioral effects...especially on my 6 yr. old autistic brother. I have a 5th grade science experiment due and would like to do something related to food dyes and how much people eat them daily but cannot think of any exact experiment to do. Any ideas?
397:	Why does pepto bismol turn your tongue black?
398:	Hi. In the answer to a question about ethyl alcohol and bacteria you-all wrote that ethyl alcohol can kill bacteria because it denatures the proteins in the cell and dissolves the cell membrane. I am trying to figure out how the ethyl alcohol in handgel affects viruses. I have read that all viruses have a protein coat that protects their genetic material and some have an envelope of fat that surrounds them. If the virus coat/shell is made up of proteins and /or fat if ethyl alcohol denatures the proteins in a bacterium cell, does it also denature the proteins and/or fat that make up the virus coat? If it does this, is this the reason we could say that hand gel is effective in killing viruses that may get on your hand?
399:	Will food coloring kill fish?
400:	We need bacteria for a science project; the name is Acinetobacter calcoaceticus RAG-1. Is this dangerous bacterium? Does work with it need to be done at a special lab?
401:	Is too much chlorine harmful for the skin?
402:	What substances destroy your teeth?
403:	Can mice distinguish color?
404:	What colors attract moths flash rate of fireflies?
405:	Which fingerprint is more popular in the index finger?
406:	Which grows faster scalp hair or body hair?
407:	I did an experiment with cats' and dogs' saliva to find our which of them has less bacteria. My experiment's results show that the dogs' saliva has less bacteria. According to your experience as a researcher, which saliva is cleaner?
408:	What information is coded into DNA?
409:	What causes that shock I feel when my body comes into contact with metal?
410:	What chemicals in the no calorie sugar replacement, Splenda, cause cancer?
411:	What school is best to go to be a vet?
412:	Do humans all like different tastes or do we all like the same taste but we taste each food differently?
413:	Do we all see the same colors or do we see different colors but just grow up to call the color the same way?
414:	Hello there I have an assignment at university for Parasitology. I have received a review article titled "Genomics of reproduction in nematodes: prospects for parasite intervention?" by Nisbet, A.J. Cottee, P.A. & Gasser, R.B. I have to present a 10 minute powerpoint on the "main points" that this article discusses. I understand that it is reviewing sex-specific molecules, technologies to identify these all in the hope of developing anthelminitcs and control strategies. However, I am struggling to understand the concepts within the article such as the different technologies used and the differences between gender-specific and gender-enriched etc. I was hoping that you could help me understand the key points that this article is conveying. Regards
415:	Hello, I'm asking for help with the assistance of my teacher. I'm doing a science fair and research project on the golden ratio in nature. I'm interested in mathematics and finding relationships between things I can measure in the real world. I've been doing research on the golden ratio and I've found that the information is either too general or too advanced. I think there may be two ways you could help me: 1. I would like some help finding material that could help inform me appropriately (beyond the junior high level, but easier than graduate school) for my mathematical research. 2. Is it possible that there might be someone on campus willing to mentor me? Teacher's note: This student is one of the brightest girls I've seen! Worth nurturing/Mentoring!!!!
416:	I am doing a project on DNA sequence and on how changes in the sequence cause disorders. For example, cystic fibrosis is caused by a recessive allele. When you look at that string of DNA you can see there are three DNA bases missing. Here are my questions I need answered: 1) What kind of technology you would use when looking for the DNA impurities? 2) In the sequences is it easy to point out the mistakes or are they hard to see? 3) Is a specific name for this action or do I just call it DNA sequencing? 4) Is it possible to replace the mistakes with the correct sequence? --Thank you
417:	How do you get head aches? Why?
418:	Why is blood red?
419:	What does Vitamin D have to do with calcium?
420:	What are the differnet types of wax?
421:	Do you have any unique information for the use of Calcium, the element?
422:	Are all plant cells square and all animal cells more round in shape?
423:	What is color blindness, how can you tell when you get it and are there any treatments to get rid of it?
424:	Is silk made of living thing?
425:	How many chromosomes do butterflies have? My teacher and I have a debate on if they have 380 chromosomes or 20-40.
426:	Is there a thread that can support human weight (like spidermans' webshooter)?
427:	What are fossils made of?
428:	Is Spinosaurus the biggest dinosaur? How many teeth does it have?
429:	How does a mummy body stay the same?
430:	We have chickens. For our science fair I want to die the color of their food and water to see if it effects the color of their eggs. Can this hurt them?
431:	Can humans bring dinosaurs back to life like Frankenstein?
432:	How old does a triceratops have to be to mate and lay eggs?
433:	Why and how do saber tooth cats attack mammoths?
434:	How many teeth is a shark supposed to have?
435:	How long is a gray whale? Can it be as big as 5 school buses?
436:	After how many generation of Chromosomal crossover will human beings stop?
437:	How do iguanas reproduce? Do they lay eggs or give live births?
438:	Do cow farts contribute to global warming?
439:	What common ancestor do humans and other mammals share?
440:	How can obligate anaerobe bacteria can survive without respiration of oxygen!?
441:	Why can people see more clearly when they squint their eyes?
442:	How do snails reproduce?
443:	Based on evolution,why did insects start of so large and become very small today?
444:	What living things do not have vertebrates?
445:	Why are spiders dangerous?
446:	What is in silk that makes it a fiber that we can wear in any season?
447:	How can we test the effectiveness of rubbing alcohol in killing bacteria?
448:	How do seals reproduce?
449:	Why the exoskeleton present at joints is flexible and soft? Significance?
450:	Why do cows have splotches?
451:	How do animals react to weightlessness?
452:	Is there a sixth human body sense and how does it work?
453:	How many times does your heart beat?
454:	How are eathworms created?
455:	How do spiders construct webs that are in the middle of two distant objects?
456:	Why animal cells have more variety in shape than plant cells?
457:	Bacteria was discovered. It was whitish, yellowish with a green tint. It had circles in it. it was a slimy texture that was of thin substance. It had a bubble surface and it was translucent. What type of bacteria was it?
458:	For animal science our teacher wants us to die a fish a different color. How would I go about doing this? Or can I just get a white fish and out like 2 drops of food color on each side of him ? Because I have a 3.0 GPA looking at going into collage next year, this is 50% of 1st semesters grade. Thanks!
459:	What diseases do bananas and fish carry? (Mercury, Tiny diseases on banana, etc.) How do safely carry food from one place to another without diseases getting on the food? This is for a very important group project. Thank you!
460:	Are viruses alive? What about prions?
461:	If an Producer is an organism that makes its own food. And a Herbivore is a plant eating animal what is something like a venus fly-trap be?
462:	My question for my science fair project is how does age affect how quick you see an illusion? I was wondering what topics I should research for my background section? Thanks!
463:	Hi - We are studying protozoa and have some questions about the shape of ameobas. In the slides & videos we've seen, the pseudopods look like arms that reach around and engulf a bacteria into a food vacuole. However, you can still see the bacteria... does that mean that there is no pseudopod "on top" of the bacteria? Or are pseudopods 3-dimentional? We don't know, since we've only seen them on slides, flattened under cover slips - what shape are ameobas when they float freely in the water?
464:	What animals have the most bones in its body?
465:	Can you please tell me the digestive timeline for protein, fat, and starch?
466:	We have been learning about the immune response (natural killer cells, dendritic cells, t-cells, etc.) and I have a question: how many times a day / week / month does your immune system fight off viruses? Is it happening all the time?
467:	If you listen to a Country song, a Hip-Pop song, a Rock song, a Rap song, and a Jazz song, what type of song would make your heart rate the lowest(and highest)?
468:	What is music therapy? What type/tempo affects moods in what way?
469:	Why do certian foods, such as raspberries, need to be refrigerated?
470:	What elements in sugar have a negative affect on the body? Do all sugars have this affect?
471:	Why do human beings having emotions and feelings?
472:	I have 5 questions. 1) Do colors affect emotion? 2) Which colors have the greatist effect on someones emotions? 3)Would a combination of colors have a greater effect on someone? 4)Does color have to be a certain shade for it to have an effect on emotion? 5)Do all colors have an effect on emotion?
473:	Does melanin have other functions besides protection from ultraviolet radiation exposure?
474:	As to your answer to the experiment of testing the effectiveness of a rubbing alcohol in killing bacteria http://www.scienceline.ucsb.edu/search/DB/show_question.php?key=1310071505&task=category&method=&form_keywords=&form_category=chemistry&start=, which one should fall apart first? And why?
475:	Is mimicry in animals innate behavior, learning behavior or both?
476:	I was just wondering how many chromosomes it takes to make one strand of DNA? Thanks, hopefully you reply soon.
477:	Which is the biggest rodent in the world?
478:	Why aren't monkeys turning into humans right now?
479:	Is there a scientific name for when a person has two different color eyes? meaning each eye is a different color. Also, is it an inherited trait? Is this trait on a specific chromosome? Thank You
480:	Why can cats land on their feet when they jump off a tree?
481:	How do our brains function similarly to small animals if they aren't the same size?
482:	How do organisms live in methane?
483:	If dolphins and whales are ocean mammals, how is that whales are large and dolphins small? I am asking this question because I read here that whales being mammals can grow large as they don't have the physical restrictions they would have on land. So why does it not apply to dolphins?
484:	We did a little research on diatoms earlier this year. We were wondering why is it that round? Diatoms cant move and, can others?
485:	Why can many plants and animals adapt better than others?
486:	We want to know is blood blue or red? It looks blue in the inside and on the outside it is red.
487:	In your body is your blood blue or red?
488:	What are some of the most interesting life forms found in the deepest parts of the ocean?
489:	What concrete evidence do scientists actually have that we evolved from monkeys and that the "big bang" actually happened?
490:	I wonder, did humans ever metamorphize in any time? Because I saw insects did it. Did the neanderthal change in some way so that they could look like humans today? I know it's not the same exactly as insects, but how are they the same?
491:	Why do male quail have a little thing on top of their head? and why do male deer have horns? I think that the quail has a little thing on thier head because that is how you can tell them apart; on the deer, I think that they have horns because that is what they use to fight. Are there other reasons?
492:	Im wondering why are dinosaurs extinct? Did their food get poisoned or did they run out of food? What happened?
493:	Is there really life on Mars? What evidence is there that there may or may not have been life on Mars?
494:	How do snakes inject venom into its victim? How do snakes slither? How do snakes close their mouth without biting themselves?
495:	Were very interested in Snakes! How did snakes get poison? What snakes are poisonous? Why do snakes shed their skin?
496:	Why cant our eye and brain process certain parts of the electromagnetic spectrum? We know that we can see the visible part, and that other animals can process infrared, for instance. What is it that makes our brains different in this respect?
497:	Our beach had an oil leak sometime around 1992- 1994. I want to know how that oil leak could effect us and the animals that live in the ocean? Maybe you heard about the Unocal oil leak in Guadalupe. I havent found good information on the health problems. I want to know.... what are the effects to us.... where could I find out?
498:	I heard that cows lay out a lot of methane but would it harm other stuff like plants and vegetation? Does it affect the atmosphere?
499:	Are there any environmental problems in the Everglades?
500:	Why is the rainforest continually being cut down despite the fact that people know about the repercussions of its consequences?
501:	What kind of bacteria live in the swamps today?
502:	Why are monarch butterflies endangered of dying? I heard from a newspaper that they are doing studies on them.
503:	My project is about butterflies. Does it hurt butterflies when you touch their wings? Why? Do they have anything special in their wings?
504:	What is the most dangerous and wild animal?
505:	Could life survive on a Asteroid? On Earth there are six characteristics of life. In the search for alien life forms are the characteristics of life the same?
506:	Why do dogs see in black and white?
507:	We have been discussing reptiles. Looking forward, one of my students inquired about the first mammal. Has the fossil record been able to pinpoint one mammal in particular as the ancestor for all mammals?
508:	If all of the plants on Earth died, how long would it be before we run out of oxygen?
509:	How did bacteria develop on Earth?
510:	Why do four-legged animals have tails? What is the purpose of a tail?
511:	What is the most poisonous animal on Earth? How does its toxin work?
512:	We watched the Guinness Book of World Records and saw that scientists were growing human parts, like ears, on other species, such as rats. We were wondering how this process was possible. We would appreciate any response. Thanks.
513:	In fifth grade I watched The Voyege Of The Mimi and I got interested in whales. I heard that whales walked on land and there food was in the water so they adapted to the water. I want to know if there is some more evidence that whales walked on land.
514:	How are recombinant plasmids moved through the membrane into the receiving bacterium.The story in the high school bio textbook is simply that restriction enzymes clip the gene of interest, it is recombined with a ligase, and then this transformed plasmid is reintroduced into the cell - but no real explanation. Can you explain this process?
515:	As a scientist, how would you explain how the Earth was created after the Big Bang occurred? Where did animals, plants the human race come from?
516:	If the sun were to explode, what is the probability that human life forms would survive? Is there a possibility of a "Counter Earth."
517:	Up to how many eggs can a steelhead trout have? . I want to know because we will be studying the steelhead trout and I want to know ahead of time. (we just got 30 eggs in our aquarium).
518:	How many skin cells get damaged when we first get out of bed? How long before they die? Does any cell ever [avoid being] eaten? How do skin cells get their food to stay alive? Do skin cancer cells live longer than regular cells?
519:	I am Interested in Mustang Horses. I would like to now more about them. What colors they are and where they live. Ive found some basic information, but I dont know why they are considered different than regular horses.
520:	Why can't humans make the 8 amino acids which we need toget from the diet? Is it a loss of a past ability, or are we maybe gaining the ability? What amino acids do you acquire from beans and rice, versus milk, and versus tofu?
521:	Why do the bruises change colors over time?
522:	Do cells go through the same changes as human beings, or do they go through different changes? In other words, do they start little, go through some kind of puberty, then get old??
523:	What are the reasons that could keep humans from living longer than anyone does now?
524:	Why do old people get white hairs? Who found out about cells in our body? We are very curious!
525:	How does respiration work? How fast does respiration work?
526:	When we take a bath or a shower, do cells fall in the water? Can cells sense stuff?
527:	What do we know about the specifics of the bonding process between a diatomic oxygen molecule (O₂) and the third oxygen atom, the combination of which ends up as O₃? Does it have to do with radiation? How exactly does it happen? What are the effects of inhaling ozone on the human body? I know that it is harmful to plants and even deadly to them, but what does it do to humans?
528:	Why does hair grow in your nose?
529:	During mitosis, why is there a line that splits the cell when the cell divides and what causes it to do so in animal cells?
530:	We learned that spiders have eight eyes. Do they see through all 8 eyes or do they only use two like us or do they see completely different from us?
531:	What is the spider silk made of and how can it be so strong to hold a spider?
532:	If mitochondria and chloroplasts contain their own DNA, what controls their rate of replication? How much do they depend on their host cell for biochemical machinery?
533:	Pentremites species. What type of species is it? Is there a commonname for it, what age is it & what type of environment did it form in?
534:	Do any other animals have an appendix? If so what is it used for? Do you know what ours was or is used for? Could ours have been used for the same purpose long ago?
535:	Did Tyrannosaurus Rex mothers and/or fathers cared for their young? We know that the Oviraptor (meaning egg stealer) was found sitting on a nest of eggs. Was this oviraptor actually brooding the eggs? Also, does the Oviraptor and T. rex have a "wishbone" similar to birds? Is there any connection between this "wishbone" and how the dinosaur cared for its young (similar to how most birds care for their young today).
536:	If brown hair comes from pigments (proteins), aren't gray hairs formed when the pigment is no longer produced? But then why have I seen gray hairs that are gray at the end but dark at the root? What is the story with gray hairs? How do grayhairs form?
537:	From what does the yolk form? Endoderm? Mesoderm? Ectoderm?
538:	What evidence is there for dinosaurs' mating calls, duels, colors, markings, and the environment they lived in? What type of research, other than fossil excavation, if any, has been done to gather evidence for the above? What percentage of the depictions are scientific with supporting evidence versus pure speculation?
539:	How does the eggshell form on the egg?
540:	What is the thing that looks like a mouth at the end of the abdomen of the "crane fly" or "mosquito eater?"
541:	Are the two structures on either side of the crane fly, under each wing, that look like this: ------O used for balancing? If so, is it for balancing in flight or on the ground? Also, is there any other insect that has these structures?
542:	I was wondering why hydrogen peroxide affects abalone's reproduction?
543:	Why do worms come to the surface when it is raining ?
544:	When do tadpoles (polliwogs) start to appear in the creeks of Santa Barbara? When are the most polliwogs found?
545:	How do I induce hypercholesterolemia in albino mice? How do I increase blood cholesterol levels in albino mice? (Please suggest certain amounts and durations for the diet--- I would like some tips from you for my first research project).
546:	How many chromosomes does an elephant have?
547:	Viruses fascinate me. How is that they are not living organisms? Do you have an idea how did they evolve from other organisms? I was thinking that they probably evolved from the mitochondria, is it possible?
548:	Is hand sanitizer really effective? Also, since it doesn't kill viruses, should it really say "Kills 99% of all germs!" It seems a bit of a lie. Isn't it better to just wash our hands?
549:	Hello, I am a current intern at Nationwide Children's Hospital in Columbus Ohio and I am having some trouble with teaching myself some cell signaling pathways for microbial pathogenesis. I taught myself the three complement pathways to destroy pathogens through the use of C5bC78 added to around 10-16 C9s to make a MAC, but I am trying to teach myself the toll-like receptor pathways and others like that. I am very much a visual learner but these pictures that I am getting online are too complex for me to decipher. Also, the videos online that I am finding are too simple and I need to go more into depth. I have a presentation of what I did in the lab for the past few months coming up on August 10th and I need to be as well prepared as I can be because a scholarship is on the line that I am competing with other students for and it is vital that I am well prepared to be as versed as I can be in the topic of microbial pathogenesis and immunology. Are there any sites or books that you would recommend me looking for? I would really like help here! Thanks so much.
550:	Why are tears so salty?
551:	Dear Researcher! I read the article on the question "How thick is an eggshell" Amongst others... the thickness of the ostrich egg depends on the age. How much weight does an ostrich egg lose...in 500 years? Is the loss of 50% of its original weight possible? Many thanks.
552:	How do animals stay hidden in the sand as the tide is going out and the sand is going with the tide?
553:	What is the theory of evolution?
554:	What is microbial biotechnology?
555:	Why living things need to be fed?
556:	Why is GTP used in translation and transcription instead of ATP?
557:	Is it possible that an ostrich egg shell has Barium in it? I understand from the article I read that ostriches eat everything and some come from Northern Africa including Morocco, which is rich in minerals. I also understand that the water the ostriches drink there can contain barium. So, is it possible that the egg shell contains that barium? Many thanks.
558:	I am trying to find out what I have found. Can you help me? I recently found another object even bigger than the picture attached. Thank you. Click here to see what I found: what I found 1 what I found 2
559:	If the density of the ostrich shell is about 3000 Hounds field Units, or 38 Grams/cm³ for a new egg... and the natural loss reduces the density for an egg of an ostrich to 28 around the year 1850, to 25 around 1750 and to 23 around 1700, and to 20 around 1600 and to 18 around 1500, or the weight of about 125 grams. Can this decline of density be a proof of the age of an un-mounted, engraved ostrich egg?
560:	Why do paradoxical frogs shrink as they grow older?
561:	How do biosensors transmit messages to the cell?
562:	When a red blood cell gets old and worn out a white blood cell surrounds and engulfs it, forming a vesicle that then fuses with a Lysosome. What is this process called?
563:	Given an Ostrich egg with known density, what is its age? Here is the data file: click here to see
564:	What is the substrate of bulgaros and the organelle that makes this process possible?
565:	How do invertebrates excrete their wastes?
566:	How do animals help plant reproduction?
567:	I have a question about the genetic similarities between the major primate species (orangutans, chimpanzees, gorillas, gibbons, and bonobos) and humans. A lot of times one hears about how humans and chimps are the closest to each other genetically, differing in their genetic makeup by only a few percent. I´m wondering though, how close genetically are the great apes to each other? For example, how close are chimps to gorillas, gibbons, or bonobos? Or gorillas to orangutans, etc.? Do you guys know of any references comparing the genetic codes of all of the great apes to humans (from which I could deduce how similar the great apes are from themselves)? Or perhaps a direct comparison of primate genetic codes to each other? I´m mostly interested in the overall percentage difference between each species, but I´d love to look at any additional information as well such as where their genetic codes differ with regard to each other. Any help or references to resources on the subject would be greatly appreciated! Thanks! Best,
568:	How do scientists know what color dinosaurs were?
569:	How many chromosomes are there in a Geometrid Moth?
570:	From my own research I learned that cancer cells are created by abnormal cells that have undergone a change,and they use the amino acids in your body literally eating you alive. Can cancer be killed by the depletion of the amino acids in a person's body? Also, how could we sustain their life because amino acids are the bases of a human protein and body, but they are also the fuel and build if cancer?
571:	Can viral RNA multiply itself inside the cell membrane with ribosomes and get through all of the cell defenses (such as lysosomes and splicer insomes)? Are there such things as defensines?
572:	I live in the Catskill Mountains. My grandma has polliwogs in a pond near her house. It's going to be freezing in a couple of nights. Will the polliwogs all die?
573:	How do you prove in an experiment that digestion occurs and how?
574:	What is goldfish? How do goldfish live? Where do goldfish live? What do goldfish eat? What are some goldfish habitats?
575:	Can viral deoxyribonucleic acids infect the nucleus and other organelles? Do defensins poke holes in an infected cell? Does viral DNA and RNA look the same as our DNA and RNA?
576:	How many chromosomes does a ladybug have?
577:	I was wondering if you know where can I buy callus initiation medium and clone induction medium? I'm doing a project dealing with plant cloning. If you know where to get them that would be a big help!
578:	Is it necessary to insert the nucleus of somatic cell of any animal in an egg cell of the same type of animal in cloning? Can we insert sheep somatic cell in cow egg cell and have a successful cloning? If so,why is it possible? If not,why is not it possible?
579:	If you compare the two sequences of HindIII and HaeII, is there anything unusual about the sequence itself? Is there something about AAGCTT or AATT that might suggest it is something other than random if you came across it in a DNA sequence? If you wanted to cut up a genome into smaller pieces instead of larger pieces, and you had the three enzymes to choose from that we talked about above, which enzyme would you use? The 4, 6 or 8 base pair cutter, and why?
580:	How has science helped animals?
581:	Is there bacteria life on Mars?
582:	Is Panda bear related to Raccoon?
583:	What is the function of the nucleus pulposus in adult? Not Embryo
584:	Are the smooth muscles in continuous working (contract & relax) for life? For example, if the stomach is empty, will it work or not? How do both states (contract & relax) work in the body according to the organ? Note: ignore the peristaltic period please.
585:	If red blood cells would become curved, what will it happen? How can we improve blood circulation & reshape red blood cells if they are damaged?
586:	What are the scientific names for red meat and white meat?
587:	How does chlorine affect material over a long period of time? How does chlorine affect peoples’ health?
588:	What happens if your body does not produce red blood cells? Is this something that has happened to anybody?
589:	For a dog to be a lefty or a righty, does it have an effect on the animals physical or mental behavior?
590:	Why is the blood type AB called AB
591:	Why is the giant panda classified as a bear and not classified as a raccoon?
592:	How do single-celled organisms function?
593:	How are human organelles affected?
594:	What are some bad things that organisms do for our cells?
595:	Does the panda have a circulatory system?
596:	Why do we grow? How did we come upon to be humans?
597:	How wide is a gray whale?
598:	1. What do you think the effects of magnetism will have on plants? 2. What did you major in? 3. Do you think weather will play a role in magnetism affecting plant growth? 4. Do you think lettuce or pansies will have a greater increase of growth based on the affects of magnetism? 5. How many plants should I use to be sure my experiment is based on the fact that magnetism affected the growth?
599:	In my experiment, I will be testing how effective the pinky is at estimating the temperature of water. I was wondering how many sensor cells there are in the human pinky? I recently did some research on how the brain gets these sensory details from the skin and found that the part of the brain that receives these signals is called the Hypothalamus. Where in the brain is the Hypothalamus and how large is it in comparative size to the rest of the brain.? What is the rate of temperature increase or decrease to room temperature for water that I should use in my experiment? When using statistical analysis, what is the most effective way to have realistic numbers? I plan on using set ranges of temperatures for people to estimate the temperatures for. I am going to tell them what these ranges are; just that they are hot, room temperature, and cold. I plan on having the cold at around 30-40 degrees, the room temperature from 60-75, and the hot at 100-110. Do you think this is a good idea or should I just have a set temperature for each section of the test? Thanks for answering these questions for my Science Fair Project
600:	What are the effects on a fish that is dyed?
601:	At which phase of cell cycle does the mitochondrial DNA synthesis takes place?
602:	How are scientists helpful to us?
603:	What are the structures of a red blood cell? I have a project to make a model of the cell, and I wonder how I should design it. Thanks!
604:	What are some malfunctions of red blood cells themselves?
605:	My science project is "Does changing the frequency of a whistle affect a goldfish's reaction time? I have 5 questions to ask: 1)Does time of day affect a fish\'s attention span? 2) What is your education background and career choice? 3) Is their anyway I could make my fish listen better? 4) What is your prediction of my conclusion will the high or low frequency whistle make the fish have a faster reaction time? 5)Is their any advice you can give me for future application? (i know this very short notice and i totally understand if its not possible, but if possible could you email me the answers by January 20th) thank you so much
606:	Are there any diseases borne in or more importantly on the skins of bananas which could adversely affect human health? What kinds of chemical agents are used in the fumigation of bananas to kill pests or "hitchikers" in transit from the growing fields to our homes?If bananas are treated with chemicals en route from the fields to our homes, can the chemicals 1) leech deep into the skins of the fruit and 2) can\'t they leech into the boxes the bananas are shipped in making the boxes unsafe for re-packing other food products in? Thanks.
607:	Do all living things grow?
608:	Why do zebras have stripes?
609:	What is the sincerity of using dinosaurs as a link between birds and reptile?
610:	Do bugs grow in moss of any kind?
611:	How long does it take to die from no oxygen?
612:	What are the types of animals that reproduce asexually, and that also go through regeneration?
613:	Which cells are bigger, from plant or from animal, and why?
614:	Are people born more flexible than others? If so, why is this? Is the cat the most flexible animal with vertebrae?
615:	Why do cells require oxygen?
616:	Which hormones are necessary for differentiation of white blood cells from hematopoietic stem cells in the red bone marrow?
617:	Is there another way by which flowering plants attract animals? How does it help a plant to have an animal eat its fruit?
618:	Would it be possible to just inject salt into a cancer cell, so it stops making more cells and then just remove the tumor?
619:	What is the scientists view on euthanasia?
620:	Where do neuron cells come from?
621:	Why euglena is not considered either a plant or an animal?
622:	If an organisms muscle cells or nerve cells are damaged, what problems would there be? Which stages of cell division require energy? Which stages would require that new biomolecules and cellular structures be made?
623:	How does a plant make its own seeds?
624:	I just did the Rubber Bones experiment and successfully remove all calcium carbonate for the chicken bones. However, I added a step by then soaking the bones in Whole, 2%, and fat free milk, to see if the calcium in the different types of milk would help the bone harden back up. It didn't. They were actually softer afterwards. Can you tell me why?
625:	How do plants use Photosynthesis?
626:	One of my teachers in Science says that the grasshopper's real adaptation is its hind and strong legs, and my other teacher says that the grasshopper's green coloring is its adaptation. Which do you think is the grasshopper's adaptation to protect itself from predators?
627:	Why are komodo dragons and tigers not enemies?
628:	What does the anteaters meat have that tastes bad for animals?
629:	Why does it take venom to make anti venom?
630:	What term should be used to describe the metabolism of the Hafnia alvei of the Enterobacteriaceae family?
631:	What is the most delicate animal?
632:	Why do animals have whiskers?
633:	Why do rattle snakes rattle there tail?
634:	What is the most dangerous disease for human beings?
635:	What do toucans eat, and were do they live? Are toucans social?
636:	Hello there, I am a masters graduate in Mississauga, Ontario, Canada. I would be much grateful if you could lead me to an online dictionary in evolution expressions or even Biology, as I am developing lectures in the Origin of Life. Sophia
637:	If you took plane blood from a bird and injected it into a frog, then bred the frog with another frog, would you get a different species of animal?
638:	Why don't we have a large appendix?
639:	Are farts germ carriers? I was thinking about it, and SOMETHING goes from one body into another. Is airborne disease not an issue because clothes are like masks?
640:	How (as in what biological mechanism) do bats know when to wake up after hibernating?
641:	How long does it take for a baby animal to grow fur?
642:	How do snakes move on the ground?
643:	Why do dogs have wet noses?
644:	Why do animals have wet and pink noses?
645:	How many colors can shrimps see?
646:	How are abalone shells made?
647:	What is it meant by cell specialization?
648:	Which animal lives the longest?
649:	Why do animals have whiskers?
650:	How do you make chocolate?
651:	What was the first living thing on earth?
652:	What happens when u put a chicken bone in vinager?
653:	What is melanin?
654:	How can I check if I see red color for example the same ways as you would see it?
655:	Has there ever been a human clone? What are your thoughts of cloning in the future? Okay? Not okay?
656:	How would the human body be affected without the process of mitosis?
657:	Do smaller bones soaked in vinegar become bendy sooner?
658:	What is an ecosystem and what is it made of?
659:	How did all the houses and streets looked before the dinosaurs came?
660:	Does music effect animal behavior?
661:	Hello Sir, I am a post graduate student in the field of biotechnology from India, but there are some questions right from my schooling days that are still left unanswered for me. We were taught in the schools that Birds live in nest, spiders in their web but i really wonder do these birds and spiders really build there nests and webs for living or they are made for other purposes like Nests are build for laying eggs and bringing up there young ones and webs are build by the spiders for catching prey?
662:	How do venus flytraps and pitcher plants get their energy from the food once they have captured it?
663:	Do elephants feel pain like humans?
664:	Why do elephants cry and get emotional and also why do poachers kill elephants when elephants did not even do anything to them, they are just trying to live a good life?
665:	Do elephants have feelings?
666:	Are elephants like humans?
667:	What do owls eat?
668:	What are the benefits and harms of solar radiation and solar rays?
669:	What color is our blood inside of our bodies?
670:	What is a nucleus?
671:	How effective has science been to protect endangered animals?
672:	How do pandas look like?
673:	Is there any cell that has round shape?
674:	How is ATP produced in a cell?
675:	Hello,Today in science we were learning about Darwin, evolution, and artificial/natural selection. I was wondering why there aren't sub-species of human like there are types of geese and breeds of dog.
676:	If dinosaurs became extinct 65 million years ago and humans only came about .25 millions ago, our perception of dinosaurs and how they look (courtesy movies such as Jurassic Park) is just conjecture- albeit a brilliant one- is it not? We can't really know what they looked like, can we? Even the accuracy of our technology ca\'t ever be truly determined, can it?
677:	Do invertebrates change colors like the chameleon's do?
678:	When you study germs, what color are they?
679:	How does pandas help scientists?
680:	Are their any fossils that haven't been found yet?
681:	Why can we see colors? And why can we see light?
682:	Is there hair on the bottom of our feet or on the palms of our hands?
683:	What causes small animals to grow, while big animals tend to shrink? (over long periods of time) My teacher was talking about how for example spiders used to be bigger? But how can that be? Yes I learned some things about evolution and how over long periods of time things tend to change, but why shrink? Why grow?
684:	Why do animals need energy from the sun even if they get energy from the food they eat?
685:	To which animals are pandas related?
686:	Which organisms have the ability to regenerate limbs, eyes, and internal structures?
687:	Are there any organisms which can regenerate their entire bodies from a central section, or from one limb?
688:	What is the meaning of "biology"? We were taught that "bio" meant life, and "logy" meant "the study of". Have you been taught this also? Thank you for the courtesy of a reply.
689:	How long a whale can stay underneath water? How long they can stay on land?
690:	What type of frog multiples very fast like in 2 days that lives in Michigan?!?
691:	Why whales cannot breathe in water?
692:	Is there a living thing that does not move?
693:	My husband was bitten/stung by something - we think a spider of some sort, last May. The bite was painless. It started as mosquito bite size and went through the same progression/symptoms as a Hobo spider bite. I had the same thing happen 3 weeks ago and am still recovering from the "bite". Do we have Hobo spiders in Santa Barbara? We never saw what bit us, what could it be? I'm still recovering.Thank you.
694:	What is the minimum number of cells a living thing can have?
695:	Does an ant have the intelligence to go through a maze?
696:	Does the artificial light effect the pigment of the goldfish? If so, how long do you thing it will take to the goldfish to change color?
697:	Does an ant have the intelligence to go through a maze?
698:	Can you tell what kind of bones are the ones on the pictures below? bone 1 bone 2
699:	I cannot find the kind of degrees that an oceanographer needs. Can you help me?
700:	What are things that are alive, but display characteristics of non-living things?
701:	How dooes a caterpillar make a cocoon?
702:	Hello.I am researching the role of the spleen in the immune system, particularly in response to peripheral cytopenia. Do you know what happens to the spleen if it experiences a sudden increase in abnormal erythrocytes? Does this cause any spleen pathology? And finally, what does loss of spleen function mean for the immune system? Thanks.
703:	How do Zebras get their strips?
704:	What is the difference between mimicry and camouflage?
705:	Does petting a dog could affect a person's blood pressure?
706:	What is the organelle that is found in the nerve cell and does not replicate?
707:	How many types of living things are are in the oceans, rivers, and tide pools?
708:	How does a mitochondria in a cell get energy from food, water, protein, etc?
709:	What are your lungs made of?
710:	How thick is an eggshell?
711:	Why do we need cells to live?
712:	Do animals breath out carbon dioxide?
713:	How do you know a cell is alive or not?
714:	What is a nutrient or anything that comes from outside of the cell membrane, which does it go to the nucleus (even if it ends up like a waste)?
715:	How come you don't see everything blue if your eyes are blue?
716:	What is the thickness of different eggs?
717:	How is it possible to breathe in zero gravity?
718:	Scientifically, what happens to a person when she/he dies, where does she/he go?
719:	How did dolphins evolve from dogs that lived by the ocean?
720:	Why is that when cells from a multicellular organism falls off it dies? When I look at unicellular and multicellular cells they look some what alike.
721:	How do animals help plants?
722:	What do Meerkats need to survive?
723:	How do people with 4 cones in their eyes see color differently than most people who have three cones? Why do they see so many more colors? How do cones work?
724:	I read an article attempting to explain why viruses attack cells. The argument mentioned by the author hinges around the idea that a virus is genetically programmed to attack cells. We already know that. What is missing is how this viral genetic code was written in the first place. This is not a philosophical question! The point is as follows: evolution is an ongoing biological process and different life forms are different form one another. Having said that, it is not clear how the genetic make-up of a virus can be designed in order to successfully attack cells. Consider the differences between a bacteriophage and the Human Immunodeficiency Virus (HIV). Clearly, they have different structural properties that allow them to successfully invade the corresponding targets. Why? How did it happen? What are the fundamental mechanisms underlying viruses, i.e., design and build a virus that will be able to infect the following cell? Scientific answers are required to tackle these hard questions.
725:	My Question is: How much oxygen will land based microorganisms convert in a Mars like atmosphere? I need help getting the tools for this experiment. Is there somebody who could help me?
726:	Why does Mitochondria provide energy for the cell?
727:	How do animals help the environment?
728:	How does Photosynthesis affect other organisms?
729:	How the owl camouflage to survive?
730:	Do you know how climate change accurs and why it happens? Do you know what wwf-international is doing about it?
731:	What are enzymes and how are they important to living things?
732:	What happens after people die?
733:	Batrachotoxins, or frog toxins that are found in the genus phyllobates of poison dart frogs, have been identified in the diet of the frogs rather than being self-synthesized. I was wondering since the discovery that beetles from the family merylidae were known to contain the batrachotoxin ingredients, how did the beetles obtain the necessary parts for batrachotoxin synthesis, since these beetles cannot make the toxin themselves? Has a plant source been identified that makes the alkaloids for beetles to consume, and if so, how do plants make batrachotoxin in the first place? Thank you.
734:	How do leopards get their spots?
735:	I know that plants take in carbon dioxide and give out oxygen. But do all plants need oxygen? What if all the plants where gone what will happen to the presence of the humans? Will we all die slowly? What will happen to the animals?
736:	What is embryonic development?
737:	I was told that slaves found their way North by looking for moss on the North side of trees. If this is true, and how does it work with the moss and the North of the trees?
738:	If we were to discover a living dinosaur could we use it as a template to clone more, and to fill in the gaps in the DNA?
739:	Do any of the UCSB scientists believe in creation instead of evolution?
740:	How would an ecosystem comprising of grass land be effected if all carnivores were removed?
741:	How long are pandas supposed to live?
742:	I have some questions for my Science project: 1. What are the basics in mice vision? Color? Range? 2. What is the average life cycle of a domesticated mouse? 3. How many mice are born in one litter? 4. What are the basic care instructions for mice new born? 5. What do mice eat in the wild vs. what we feed them as pets? Thank you so much for your time!
743:	A cell knows what to do because it is programed to do what it do. But, what or who programed the cell or any other unconsciousness life to know what to do? I mean, how the atoms of the first living thing know how to be arranged to construct this programed "machine"?!
744:	What factors affect great white migration patterns? Does it have to do with following their food or is it the weather?
745:	How does a sneak put venom in your body?
746:	I'm a senior & I have decided for awhile that I would like to be a zoologist especially because wildlife animals have always seem to interest me. My mother believes I will make it nowhere & that it will be dead end. Please give me some guidance in some things that I could do to insure that this wouldn't happen.
747:	Are gorillas our (Humans) Ancestors?
748:	How long does it take for snails to have babies?
749:	How does Transpiration work?
750:	If someone's body gets a DNA mutation, what could be symptoms that happen to them or the cell?
751:	What's the difference between bacteria and virus?
752:	What exactly happens during meiosis?
753:	Why are there no snakes in Hawaii?
754:	How does hand sanitizer kill germs?
755:	What color is blood without oxygen in our body?
756:	What is the scientific name for kneecap and fingers?
757:	I understand that Euglena's have chlorophyll and chloroplasts, but how EXACTLY are they able to photosynthesize and be an animal at the same time? And, if they evolved would they most likely lose the plant part, animal part, or keep both and become the first intelligent animal/plant creature?
758:	Can insects spread plant seeds?
759:	How did cats become their size?(How and where do they come from)?
760:	Why do people think that we evolved from monkeys?
761:	Hope you are fine, I am confused about the nature of life, the main point is that if the first organism on earth is Bacteria, then where the organism (Bacteria) came from? How did it come to exist on earth? Please help me. Thanks,
762:	I want to be a Marine Vet Tech, is it the same schooling as becoming a vet tech or are there colleges and programs that focus on marine animals? I've looked at colleges with vet tech programs, but marine vet tech is hard to find when researching online. Should I take regular vet tech classes, then find a course that focuses on marine animals? I have seen that most vet tech programs have a (1) class that deals in marine/exotic/large animals, is that enough the be a marine vet tech? What should I look at to study for what I want to do?
763:	Why is sound so important?
764:	Does venom save lives?
765:	What are Canadian Lynx migration habits?
766:	How does squid shoot the black ink out of it?
767:	Why is salamander's skin poisonous?
768:	When do sea anemone reproduce? How often do sea anemone reproduce?
769:	How do baby whales get born?
770:	How do dogs find their way back when they get lost hundreds of miles from home?
771:	What did T Rex eat?
772:	How are there tentacles so sticky, like the squid's?
773:	Do birds urinate?
774:	What is the difference between a swamp, marsh, bog, and fen?
775:	Do chromosomes make up DNA or contain DNA? If it does contain DNA, how does 46 chromosomes make up the 220 different somatic cells with different functions? 46 =/= 220, because doesn't each different somatic cell have different DNA(double helix)? How does this work?
776:	Can you engineer viruses that attack harmful bacteria in the same way that HIV attacks T Cells?
777:	Why do salamanders need their skin for protection?
778:	Are there animals which do photosynthesis?
779:	People have different types of blood (e.g A, B, AB or O). Is it possible for animals to have those same types too?
780:	How do Sea Anemones protect themselves?
781:	What is juvenile hormone?Is there a difference between pupa and cocoon? If yes, what is the difference?
782:	Why don't fish move slowly in cold temperatures like reptiles do? Both are cold blooded.
783:	Do sea turtles have teeth?
784:	How does conduction flow through a cell?
785:	What is blood pressure?
786:	What can kill a Lion?
787:	What kind of snails can be eaten by humans?
788:	It says neurons do not divide. Can we expect brain cancer due to division of neurons. Or are the brain cancer solely due to division of other cells in the brain?
789:	What would happen if we did not have a digestive system?
790:	If a tree can live for thousands of years, and humans only live for about 80 to maybe 100 years, surely the trees are doing something we have done wrong. Is it possible to combine a plant with a human and cut off the growth problem which may solve immortality? Have scientists tried to combine animal cells with plant cells?
791:	I want to know about apex predators. Why are they so important for nature? When no one hunt them, how is their population controlled by nature?
792:	Can we kill viruses?
793:	How does Iodine kill bacteria?
794:	Do insects move in a different dimension other than humans do? I have heard that insects(like housefly) live in a more faster world. Is it true?
795:	Are viruses living, once living, or never living?
796:	Are snails scavengers?
797:	When was first dinosaur fossil discovered?
798:	Why humans do not have tail?
799:	Are humans and animals the same?
800:	Hi, I have been doing a project about what would happen if you switch one species brain to a different, example (human to frog), and what part of the body makes you grow?
801:	Why do we go through puberty?
802:	Does a ferret see color?
803:	Do silk worms eat all types of mulberry tree leaves?
804:	Herbivorous animals are the same but their excreta are different, why?
805:	Why a lizard's tail grows back?
806:	Is it safe to eat snow or drink it melt?
807:	If plants absorb sunlight and we eat plants or other organisms who eat plants, does that mean we have a fraction of the energy of the sun in our system?
808:	I am aware of how the process of parthenogenesis occurs, however I wanted to ask whether it is theoretically possible to stimulate/program the reproductive cells of other organisms to perform this process, and how it would be done.
809:	I've seen different drawings of human cells. They use different colors to show the different parts of the cell. My question is, what is the actual color of the inside of a cell?
810:	How much energy of the phytoplankton is given off when eaten?
811:	What is the highest frequency that most humans can hear?
812:	Do all living things reproduce?
813:	Are tears a waste product?
814:	Why are skin cells undergoing mitosis continuously?
815:	What would happen if the earth had no photosynthesis?
816:	How thin is a eggshell?
817:	What is the Ebola virus and should I be afraid?
818:	How is metamorphosis different from the development of baby mammals?
819:	When can we find gill slits on tadpoles?
820:	What season do caterpillars grow the fastest?
821:	I have a dream to become a scientist, I want to change the world and create antibiotics. I feel like I was made to do something on this earth. My questions: Next year I am taking biology or should, I take Earth? If we can make our DNA strand from keep dying, can we humans keep living at the age it stops replacing?
822:	We find a lot of fossils today and I have heard it is because there were different events that caused animals and dinosaurs to die. Why didn't the fallen bodies of the dead animals just rot? Why did they turn into fossils if they just fell down dead? If all of those dead animals that are fossilized were buried rapidly with water, etc., (which is needed for the fossilization process) what caused that to happen with all of the thousands upon thousands of fossilized creatures? Was it thousands of small disasters with water, etc? I'm just confused on that subject because we find so many different fossils in so many layers. Why were bones of an iguanadon, mastadon, hadrosaurus, monkey, bison, racoon, Indian jawbone and teeth, all found together, and in the same layer in the Ashly Beds in South Carolina if they all were said to have lived at different time?
823:	What is the easiest way to distinguish a type of dinosaur?
824:	How is lumber related to the process of photosynthesis?
825:	What can we do (in terms of temperature sugar,liquids) to help yeast produce more carbon dioxide?
826:	What liquid could produce more Carbon dioxide with yeast?
827:	How does the sun help the plants grow? How does the sun help humans? How does the sun help the solar energy?
828:	I have a spider that I think is brown recluse, can you help me identify it?
829:	Say all of the plants on Earth were to die off tomorrow, what could be some possible causes and could humans survive it?
830:	Are the lungs and blowhole connected?
831:	How do viruses attack cells?
832:	Why do we get itches on our body?
833:	What are mice used for experiments?
834:	I color is just certain light reflecting off a certain object(example: if something is orange, it reflects "orange" light), then is there really any color? Would the question be not "What Color is it?" but "What Type of light is being reflected?"
835:	How do dogs hear better than humans?
836:	Were whales land animals?
837:	Do bats hibernate?
838:	How many kinds of cells are there?
839:	What are the things that cause cancer? Why does cancer have to exist? Will there ever be a way to get rid of cancer for ever?
840:	What is the difference between genotype and phenotype?
841:	Is there any blue blood in our bodies at any time? Or is it all red with different shades?
842:	What happens when a plant does not get enough water?
843:	Do birds help plants grow?
844:	Hello, People evolved and selected by the genes which adapted to the environment that are favor to them. So, for example, people who live at the higher latitude area have lighter skin color, and vise verse, people live near the equator have darker skins for the ultra-violate protection reason. If a white couple (their grandpa and grandma and the past generations are all white) move to somewhere near equator, and then the generations past on (and all of their offspring mate with pure white people), will their skin color change because of any environment reason? Thank you so much for taking time to answer this!
845:	Why do we have Tissues in our body? Why do tissues that work together form organs?
846:	How were the bones preserved from the La Brea tar pits?
847:	Do plant cells and animal cells look the same and why?
848:	What type of cells do the examination of the cell's cycle? (Qué tipos de células examinan el ciclo de célula?)
849:	Why are whales mammals and not fish?
850:	What is more comparable to stomach acid, lemon juice or vinegar?
851:	What is the cell wall made of?
852:	Does Euglena not have a cell wall?
853:	How can the geometrical composition of a spider cobweb be effective enough to trap insects?
854:	Why are specialized cells needed in the human body?
855:	How are plant and animal cells different?
856:	How does pollination differ from fertilization?
857:	Where did the tyrannosaurus live? What did they eat? How did they get their food?
858:	Why all animal eggs are in oval shape only?
859:	Why are gray wolves being hunted?
860:	Why are bees going extinct?
861:	Can you give some information about the kingdom of fungi?
862:	What is the reason fireflies emit light and how does it work?
863:	How do plants and animals use the food produced during photosynthesis?
864:	Which animals don't have blood?
865:	I have a question for you. I read that brain cells do not replicate, but some brain stem cells are replicating. If mitochondria divide each time the brain cells divide, does this mean that only then we can have new cells? I have read that they also replicate at random at any time of the cell cycle. My question is also: if the brain mitochondria are different than the skin mitochondria because they must last much more time, does skin mitochondria last as long as brain cells?
866:	What rate do red blood cells die at? Thanks!
867:	1) Why do sports players usually hurt their ligaments instead of tendons? 2) What's the difference between human cartilage and shark cartilage? If a human needed cartilage could a human use cartilage from a shark?
868:	What is life?
869:	Hello! I am teaching 6th-11th grade sciences. I have a B.S. in science, but only took a year or so of microbiology in college. Every year we have students who want to do microbe projects for science fair. We have good success growing microbes in petri dishes. As yet, my best method for measuring microbe growth is to give students a 5mm x 5mm grid which they lay on top of the petri dish and have them estimate how much of these boxes are filled with the microbe that has grown. Then they add up the portions of the boxes or whole boxes filled by the microbes and arrive at an mm squared value. One science fair judge asked about the height of microbe growth. I guess students could arrive at an estimate of height by the same method. I have done online searches which have only yielded dilution methods. We do not have any specialized equipment for observing microbes in dilution, nor do I have stains for the various microbes to show up on a microscope slide. Any websites or suggestions you can give a generalist 6th-12th grade science teacher would be very much appreciated. Thank you!
870:	What happens to the brain when you think? Why do we need a brain to do things?
871:	Hello. I am doing a research project on bioluminescent organisms and have a question. I was wondering if there is a connection between luciferase in bioluminescent organisms and chlorophyll in plants. If so please tell their relationship. Thank You.
872:	How do microorganisms enter our body?
873:	How do eubacteria obtain food?
874:	Is there an organelle which has to be colored a specific color in an animal or plant cell? If yes, which is it?
875:	Does thought require language?
876:	How is the plant cell different from the animal cell?
877:	How can our body carry out digestive functions on a daily basis?
878:	I am going to enter my first year of college next year and am deciding between UC Davis and UC Santa Barbara. I loved UC Santa Barbara, but I will be entering the animal sciences to later become a veterinarian or zoologist and UC Davis has a great program for that. Can I please have details about UC Santa Barbara's zoology and pre-veterinarian programs? Please include how much hand-on experience students get with real animals, where UCSB students receive animal science internships, and statistics about where students from UCSB continue their animal science schooling after graduation. Thank you so much!
879:	How do Venus fly trap digest insects and does it matter what type of insect?
880:	When did humans first start roaming the earth about how many years ago ?
881:	Is there possibly going to be a cure for Ebola, if so how long is the expected time for the cure to be released?
882:	What is one weather condition that can limit the growth of a population?
883:	How do ATP and ADP work in a cell?
884:	I'm having a conversation with my friends at lunch and the topic of blood pigmentation and whether it is blue when it has no oxygen or not. I showed them your website that in fact states that it is always red but may give off a blue hue. However, some of my friends do not believe that there is any way for you to scientifically prove that. So my question to you is, how do you know that blood is always red?
885:	Hello, I attend 7th grade at Eisenhower Middle School in Albuquerque, New Mexico. I am doing a project in which I have to use bio mimicry (mimicking nature to solve human problems) to solve a food system problem. My group and I would like to solve the problem we have that so much water is in the world, yet very little of it is fresh. We know that there have already been desalination plants invented, but they aren't very efficient. We were thinking about making a desalination plant that is based off the salt glands that can be found in many sea birds. This may be a more efficient way of taking the salt out of water. We have been doing much research over the course of the past week, but many of the articles and videos that we are trying to read are too difficult for us to understand. I was wondering if you could put in simple language the processes used by the birds to desalinate their water. Thank You!
886:	If stingrays like warm water which we had in Ventura a month ago, where do they go now that the water is like 55F, cold!? I know they liked the water because I got stung by one.
887:	How many rows of teeth does a spiny dogfish shark have? What depths do they dwell in?
888:	What do snakes eat?
889:	Is it true that the brain has the mind, but the mind has no brain?
890:	I often hear this phrase, when discussing the California drought, "We are just letting the water go down into the ocean!" How does the water that goes "into the ocean" replenish our environments own water supply? What do we risk by damning the water?
891:	Does Archaebacteria have DNA?
892:	Why does a dead rat get mold after a few weeks?
893:	Approximately what percentage of the things around us are made from polymers?
894:	Do antiseptics contain triclosan or triclocarbon? And do they cause resistant-bacteria? Do alcohol-based sanitizers contain these compounds? What are the mechanisms of action for both antiseptics and alcohol based sanitizers as well as antibacterial agents?
895:	I am doing a project on animal migration and my question is what animals migrate in the pond and where?
896:	Why do geckos shed every month? My leopard gecko's name is Ann Marie and she also eats her skin after shedding.
897:	NASA and the whole world is basically looking for other life on other planets within our solar system. Or, more specifically, "life as we know it." What is life as we know it? What are we looking for, and what would be defined as life that we don't know?
898:	Which organism has most chromosomes?
899:	What happens to the cancer when the person dies, as in lung cancer. Does the cancer stay in the body and dies along with the person, or does it leave the dead body, and then invade a new living body? Thanks,
900:	How does aquatic, salt water plants like seaweed get the fresh water they need from their environment? It was just hard to wrap my mind around it since salt water aquatic plants somehow manage to stay alive without a source of fresh water. As well as this, I have also been wondering how a salt water fish filters salt water in order for it to be fresh? Thanks!
901:	Given that many modern day containers, utensils, cookwear, clothing,...are coated or composed of types of plastic which are publically recognized as having the ability to transfer\'estrogeni\' chemicals to whatever they come in contact with, is it possible that these 'estrogenic' compounds may be a contributor to decreases in fertility, neurological conditions and obesity in the population as a whole? Could this also be a contributor to a decreased sex-drive in women, given that testosterone is the 'sex-drive hormone'? Thank you for your time.
902:	Still to this day we have not discovered even half of the ocean and its inhabitants. What is the chance that there really is a megalodon or some huge prehistoric creature in hiding in the waters?
903:	What does a clam eat?
904:	What covers and protects the brain?
905:	Could the regeneration process in some animals be quickened by selective breeding or cross breeding with two animals that both poses this function? Could one animal that poses the regeneration function breeding with an animal that does not have it; if so would the offspring have the function of regeneration of limbs or other body parts?
906:	What makes carbon atoms essential to life?
907:	Does a whale really lay eggs or give birth?
908:	What triggers the cry of a baby when she/he is born, just after leaving the mother’s womb?
909:	I am doing a science fair project "Which sex develops the most bacteria on sweat molecules? Male or Female". I need to know whether or not it is possible to take a culture of sweat and then grow it on gelatin. I will appreciate some help for which are the proper parameters to use(time line, kit or no kit?, etc.) in order to do this test in the correct way. Thank you.
910:	How many species have whiskers? What is the function of whiskers? How are whiskers and antennae alike?
911:	Did dinosaur and people ever exist on earth at the same time? And if not does that mean the Bible is wrong since it says man earth and beast were made basically at the same time (7 days)? I basically believe in the evolution theory, but then where did humans come from?
912:	Are there any organisms besides humans that produce 2 eggs from the same oocyte?
913:	All over the internet you can find warnings about botulism and occasionally listeria and even legionaries disease in relation to at-home vacuum packed foods. The instructions of food-saver vacuum sealers explain that anaerobic bacteria grows at certain temperatures and in certain environments. In order to keep the food safe, Can I let my hot food cool on the counter and then vac-pack it safely? What to do?
914:	Since stomach has pH of 1, and the intestine has pH of 7, how do stomach and intestine deal with the pH difference?
915:	How many BASE PAIRS ( not bases, not separate nucleotides) are there in the human genome?
916:	How do animals get their energy?
917:	What kind of animals eats elephants? What kind of animals eats cheetahs,lions, tigers, leopards,and wild cats?
918:	Does the carbon cycle function the same during the night as it does during the day?
919:	What is a measure of energy?
920:	How could you tell if a cell which was going through cytokinesis, was a plant cell or a animal cell?
921:	Is there a scientific reason we do not have tails?
922:	We are under the impression that certain type of food is digested by a base (alkaline). Protein needs an acid to digest. The question is, does ALL food get an acid bath or does the body only dump acid when it's needed?
923:	I recently learned that the velocity of blood moving in veins is faster than that in capillaries, but the blood pressure in veins is much lower than that of any other blood vessel. Since veins have a relatively high blood velocity (at least compared to capillaries), shouldn't they also have a higher blood pressure? Why don't velocity and pressure in fluids go hand in hand?
924:	What is the difference between producer, consumer, and decomposer?
925:	Do cells come from other cells?
926:	How can the wind help the plants and animals to reproduce?
927:	How many different kind of cells are in the human body?
928:	By what process does waste leave cells?
929:	We had a can of mandarin oranges that was swollen and leaked brown liquid on to the pantry wall. My mom is using a bleach solution to clean the pantry shelf/wall what else should we do to make sure we don't get sick? Is there any way we can know what kind of bacteria it was for sure?
930:	Why are skin cells undergoing mitosis continuously?
931:	Why do mitochondria have its own DNA in a simplified version?
932:	What causes heart attacks?
933:	Hi! I have a student who is wondering approximately what percent of the air we breath out is carbon dioxide. He understands that we take in oxygen during cellular respiration and we give off mostly carbon dioxide along with some nitrogen and oxygen. But....he wants to understand what percent is carbon dioxide during an exhale. He wants to compare your answer to the answers he's getting for his own cellular respiration data he's taken for his science fair project.
934:	If one assumes that Tyrannids nested and produced eggs similar to Ornitholestids, how thick would a tyrannosaur egg have to be, if the female weighed 12 tons?
935:	What is the thing inside reptiles that allow them to heal? What is it made out of?
936:	What happens every 28 days in the reproductive system?
937:	How do scientists figure out what type of dinosaur it is?
938:	What would the world be like without chlorine?
939:	What different kind of polar bears are there?
940:	Why do people die? And why can't we live forever?
941:	Hello my name is Ashton and I am doing a science project on influenza and how it is produced. Do you think that it is important to make sure that I am testing people with the flu and things they are around? Also do you have any advice for this project?
942:	Why are cells small?
943:	Why can Sea animals breathe under water and we can't?
944:	Do insecticides stunt plant growth?
945:	Hello. I'm doing a research paper on what career we are interested in. At first I researched Animal Biology/Zoology. But I noticed that Animal Biology isn't exactly what I want. What I want to do is be the person to take care of the wild animals, nurse sick animals back to health, take care of baby animals, and treat the injured animals. I want to work with wild animals, be in the field or in the office taking care of them.But I'm not sure exactly what career to research. Animal Biologist? Zoologist? Wildlife Veterinarian? What do I have to do to get there? Like what degrees? What does this career pay? What education would I need and what classes should I take? If you could please answer these questions and give me a lot of information about a Wildlife Veterinarian that would be great. Thank you.
946:	What is a protein?
947:	Why is people's poop brown?
948:	It is often said that we get our energy from food by breaking down the bonds in glucose molecules. How is energy 'stored' in these bonds? And what is the role of ATP in carrying energy? What, on the molecular level makes ATP so special to be called the 'energy currency'? Thank you!
949:	Why human's eyes are in front and not on sides like birds?
950:	Why chromosomes differ in length ? Why one arm is shorter and one in longer (except metacentric). What is the reason for this design ?
951:	Why can mealworms eat Styrofoam?
952:	Does the number of chromosomes determine the complexity of the organism?
953:	What would happen if Earth were to lose both human and animal lives, would Earth become another planet or still be Earth?
954:	About how many times does DNA have to fold up to fit in a cell?
955:	Memory B and T cells are meant to last for a lifetime, but what happens when they are no longer needed in the body? Do they undergo Apoptosis? (Reference to the Immune System)
956:	Why is there life on earth?
957:	Why do animals leave seeds behind?
958:	Did dinosaurs exist in Los Angeles?
959:	How many senses do snails have?
960:	I want to learn how snails lay eggs and what is the temperature they need, so my snail Neille can lay eggs too.
961:	Why is it important that the end result of the process of meiosis is sex cells that contain half the amount of DNA that is in body cells?
962:	Earlier humans had a tail with appendix bone. But now the tail has disappeared. Why?
963:	Has a dinosaur ever been found that was split between two continents? As in, part of the body found on one continent and the rest on another continent?
964:	How did different race and languages become about, if we all come from Africa?
965:	Why do earth worms come out when it rains?
966:	I am doing a research about a species that has gone extinct and I figured out that the species have grown a certain way because of "fossorial tendencies." I have tried everything to know what that is. If you can please inform me of what fossorial tendencies is, I would appreciate it very much.
967:	What would life be without oxygen and what do we need oxygen for?
968:	What is the largest modern animal on the Earth?
969:	Suppose that scientists found parts of the DNA from a dinosaur, what information would this discovery provide to the scientists? What information would it not give them?
970:	Why dinosaurs become extinct?
971:	What is sperm?
972:	Do Triplets occur naturally?
973:	Can you tell me facts about the alligator snapping turtles?
974:	Why do a lot of people die from cancer? My aunt yesterday die from cancer in my own arm.
975:	What would happen if the cell cycle would not take place?
976:	How do species change over time?
977:	What is an anus?
978:	Were the dinosaurs the first animals alive on Earth? If not which was the first animal alive on Earth? What species?
979:	Does everything in the world need the sun to survive?
980:	What is the function of the folds within the mitochondria?
981:	Where do unicorns and horses and flying unicorns can be found?
982:	Which has more genetic information, a body cell or a gamete?
983:	Do all snakes hibernate? What Skeletal/Muscular systems contribute to their movement? How do snake species inject venom and do they all inject venom the same way? Thank you for taking the time out of your busy day to answer my questions. I would personally like to thank you for all your hard work that you do to preserve wildlife through out the world.
984:	Why are plants important?
985:	Why are all humans different? We are all animals. Is it because are we different species or race?
986:	How many vertebrae does a blue whale have? Do all blue whales have the same number of vertebrae?
987:	What is a vacuole?
988:	Why are dogs used to detect drugs or illegal substances at airports?
989:	Is it possible for a fish to be frozen in a block of ice (suspended animation?) and survive? My friend says that sometimes fish in Canada get frozen and will thaw out in the Spring/Summer.
990:	How did animals come to be after the big bang?
991:	Why do cats have an extra toe on their front paws?
992:	What came first the chicken or the egg?
993:	I wonder why overtime my hair stopped being curly and is now wavy.
994:	Why are cats so flexible?
995:	What are the mechanisms behind human speech?
996:	How are dogs still 99% wolf, after all of the genetic engineering humans have done on them? Is the wolf in them always there, or is it triggered?
997:	Why do all living things die?
998:	Not including humans what is the most civilized species?
999:	I wonder if the myth that cats always land on their feet is true. Why?
1000:	Is cancer hereditary? If so, how can you prevent it?
1001:	Why can't some animals not sweat?
1002:	How long will it take for the brains of animals to be as evolved as the human brain?
1003:	Can you genetically engineer a dog to make it bigger?
1004:	How was the first animal tamed?
1005:	Can other kinds of animals evolve like us? And can humans evolve more?
1006:	I wonder why people and animals talk different languages
1007:	How fast do your nerves react?
1008:	Why animals have such strong immune systems compared to us (humans)?
1009:	How do animals understand humans. How do they know there names and know when to come when called?
1010:	Why do dogs' eyes change? Why do fishes change color and glow some times?
1011:	How did Ocean life form, and why did they evolve?
1012:	Where did we (human beings) come from? Are we monkeys? Are we fish or will we never know? I think we are monkeys but not a similar one as in the zoo, I think we are a type of monkey that we don't know about.
1013:	How do dogs understand people?
1014:	Why do dogs breathe smell better than human breathe?
1015:	Why do tortoises live so long ?
1016:	How did dogs adapt to humans?
1017:	How deadly is the flu virus?
1018:	How are birds similar to dinosaurs?
1019:	How do voices work?
1020:	What organism is all multicellular?
1021:	Besides Hyenas, vultures, and sharks, which other animals have the strongest stomach acids? Thanks.
1022:	I was wondering if a caterpillar could make more than one cocoon? My daughter brought me a caterpillar the other day and it had something coming out from it. I thought something was stuck to it so went to pick it off, and a huge train of stuff came out of the caterpillar, which now I know the caterpillar was just about to make the cocoon with it. I feel terrible, like I ruined it's chances of being a butterfly. I was hoping it could make another one? I really feel awful. Thank you
1023:	Can photosynthesis and respiration create a cycle of energy? Why?
1024:	What is spinosaurus spine (sail) for?
1025:	Do fish have blood? Why do not we see blood when we eat fish? When we eat read meat we see the blood, why not in fish?
1026:	Is there a way for someone to live with lung cancer?
1027:	What animal or animals use its/their color to attract attention?
1028:	How do snails dig holes?
1029:	How fast can neurons transmit through your body for the nervous system to function? Thanks
1030:	How does chemosynthesis help organisms?
1031:	I have enjoyed reading and learning from your UCSB science line web site. I work with Jean-Michel Cousteau’s Ocean Futures Society (OFS) located in Santa Barbara. I teach tropical biology programs through OFS and the subject came up with a student a while back about the advantage of uric acid excretion in birds. Here is the question: since bird embryos must live with their waste in the egg, isn’t a big evolutionary advantage of excreting uric acid a reduction in self pollution of nitrogenous waste in the egg. Since water is limited and there is no way to get rid of ammonia or urea, uric acid is logically the best and only safe way to deal with such waste in the egg. I’ve looked on line and in some text books and not been able to find an answer to this question. Your help would be greatly appreciated. Thanks
1032:	Could life survive in/on an asteroid?
1033:	Why does a kangaroo have a pouch?
1034:	Hello my name is Dylan and I have to write a essay about spiders and I was wondering if you could be my interview. Where do spiders live? How many types of spiders are there? What are the most common spiders in Tennessee? Any other fun facts about spiders?
1035:	Are all plant cells squares and all animal cells round in shape?
1036:	Is it possible that Earth originally developed prokaryotes as a form of collecting ingredients from its surface and atmosphere in order to re-utilize them for preservation? I wonder this because how else could inanimate material come alive, and I once read that the Earth is alive itself, leading me to believe that Earth could have been the first producer. I still wonder how the Earth would have come alive itself, but I theorize the electrical forces of atoms and specific molecules pulling or pushing themselves together or apart, as well as the natural movement of heated atoms, along with the already present forces of Earth's spin and movement produced by the big bang could have caused the inanimate Earth to begin "come alive." The original moving up of iron (or whatever element was attracted to another) from inside Earth could have led to a chain of reactions that led to more chains of reactions, and so forth, so that a never-ending push and pull were then created via the original electrical attractions. I realize this is a complex idea and a far-fetched question, but I found your website and thought I'd ask. Thanks either way!
1037:	Can animals survive if moved to a different ecosystem?
1038:	Why can't something live without some type of genetic material?
1039:	Why the tail of house lizard can grow again and that of cow cannot?
1040:	How do different sounds affect animal behavior?
1041:	Can we describe viruses as being parasitic?
1042:	How can a fossil provide evidence that a certain animal existed?
1043:	My name is Charlotte and I am a biology student in 8th grade. We are doing an Independent Research Project, and my topic question is "What Enzyme causes gelatin to lose its setting properties and how, and what fruits contain this Enzyme in addition to pineapples?" I was wondering if you could provide me with more information on how you found out that the certain Enzyme that causes gelatin to stop working and how it does so. Thank you so much,
1044:	Can a cell die without reproducing?
1045:	How do hibernating animals like bears know when it is time to wake up?
1046:	Are scientists still working on the difference between the red panda and the raccoon? In a book someone said you are still working on it.
1047:	What happens if you get bitten by a turtle?
1048:	What are different ways a human being can get sick and how can you get rid of it?
1049:	What is the skin cells purpose?
1050:	How do I prove that energy from the sun is now energy in animals' food?
1051:	What is a penguin?
1052:	Which are factors that does not affect fossilization?
1053:	What are the differences between the structure and function of plant and animal cell organelles? In other words...What are all the organelles that plant cells have that animal cells do not and what are all the organelles that animal cells have that plant cells do not and what are the organelles that are in common and what are the functions of all these organelles in the cell? Thank you
1054:	What are ways that animals respond to their environment?
1055:	We would like to know: Are lactating animals considered producers?
1056:	How much CO₂ does a cow emit in its lifetime? Is there significant contribution through its waste?
1057:	Is there any proof against the theory of evolution?
1058:	Without plants on Earth, could Earth still have living species on it? Could bacteria, cells, bugs, insects,etc., survive without oxygen?
1059:	What do animals cells need to survive?
1060:	There are red blood cells filled with oxygen from the lungs to all parts of the body. There is a lot of oxygen in other red blood cells and very little in other body cells. There is more carbon dioxide in the body cells than in the blood cells. How does the carbon dioxide and oxygen move to where they need to go? Is it by osmosis, by diffusion or any other process?
1061:	My teacher has asked me and my class to take a case file to find the disease and what caused it. I have a case that the disease turned out to be Salmonella. I currently trying to find out the mortality rate for the disease untreated and treated. I was wondering if you had any advice on how to find out more about this. If you can help me that would be great! Thank you for your time.
1062:	Before photosynthesis appeared on the planet, from what did the autotrophs made their food?
1063:	Do owls have tails?
1064:	What caused the "Cambrian Explosion"?
1065:	I asked my biology teacher this question a few days ago, and we were both stumped on the answer. He mentioned the euglena cell, a unicellular yet eukaryotic organism. I saw in the diagram that there was a Golgi apparatus in the cell, and knowing that the Golgi apparatus' function is to transport built proteins (from the rough ER) outside of the cell through exosytosis, I wondered why/how it would do that since the euglena is unicellular. Can anybody answer this question on a somewhat high school level? Every source I've looked at is packed with words I may never learn.
1066:	What do leopards eat? I need to know this for a science project on food webs.
1067:	What is a pesticide?
1068:	What type of food do eukaryotes eat?
1069:	How does a virus differ from a worm? It cannot reproduce, but it can replicate? They seem similar except a virus appears to need a host or does it?
1070:	How does visible light work? How is it that color goes from waves to visible color in our sight?
1071:	I'd like to know if tarantulas eat smaller spiders.
1072:	What was the longest living dinosaur?
1073:	How did cats evolve to shed their fur?
1074:	I have a question about dog stomach. My dog eat a felt pad. I read something that dogs stomachs are ten times more acidic than humans. Could it be possible my dogs stomach would would be strong enough dissolve a felt pad. Pad is about the size of a nickel. He is a 7 pound Yorkie. I'm not looking to use your information in a decision of my pet rather for my own personal knowledge. Thank you for reading and hope to hear from you.
1075:	How does phosphorylation take place in animals?
1076:	How are lizards related to dinosaurs?
1077:	Why do many animals think about only basic survival and reproduction, while humans have developed much from that stage, to ponder about economy, politics, appearance, and much more?
1078:	Why do mantas jump out of the water at night and belly flop back into the water?
1079:	How do animals choose a pack leader?
1080:	How do animals adapt their eyesight in the midnight zone?
1081:	How can animals sense human feelings. For example, how can service dogs detect when a human will have a seizure or is stressed?
1082:	What animals haven't we discovered yet?
1083:	How does the cordyceps fungus control ants?
1084:	How come the whale bones you can find on the beach do not look like other bones?
1085:	Why did Ebola come out when it did and why did people's immune systems not work?
1086:	Why do spiders have eight legs?
1087:	Can the apocalypse actually happen?
1088:	I am doing a science fair project about measuring carcinogens in meat. I was doing some research on how to be able to measure them, but I came across difficult ways to do it. How would I be able to measure carcinogens in meat in the simplest way possible?
1089:	How did animals evolve into what they are now?
1090:	Why do different continents have different types of living organisms?
1091:	How do dogs communicate to each other?
1092:	How come geckos have the ability to regenerate limbs and tails but can still pass away from internal bleeding?
1093:	Why are elephants so big?
1094:	What is the difference between a animal population and the difference between the animal community?
1095:	I'd like to do a science experiment to see if different size plastic particles clog up fish gills. Any suggestions on how best to prove out what size particles become problematic for different levels of membrane porous?
1096:	Why are whales mammals?
1097:	How long does an owl live for?
1098:	Is there a specific name for organisms that eat fungi? Herbivores eat plants and fungi is not a producer. This was a student question that stumped me- and my background is wildlife science/environmental science. I thought it was a great question. The tropic level depends on what is being decomposed, but it seems we have a name for other feeding habits, but not this one. Thank you.
1099:	How quickly can the nervous system relay messages?
1100:	How do antibiotics work in order to be selective of the right bacteria to be killed in our bodies?
1101:	What are the pros and cons of using pesticides? Do the pros outweigh the cons? Are there safe and environmentally- friendly pesticides? Is it really better to only farm/ purchase organic food?
1102:	Can a virus reproduce without the presence of another organism?
1103:	My question is: do bees know they are gonna die when they sting someone? I wonder that because a lot of bees sting people. I think they do not know because if I was a bee I wouldn’t want to die over stinging someone but I do not know and that is my question. Thank you.
1104:	How many toes does a duck have?
1105:	Are animals able to feel emotions, as humans do? (Like grief, happiness, excitement, etc.).
1106:	Why do living things need water?
1107:	Does an egg float?
1108:	Hello,I stumbled on your website in search of information about snail reproduction. While I found your short answers very informative I'm looking to further my knowledge on the specifics.Where do the eggs come from? Its not clear to me how the snail can possibly lay an egg. Thanks,
1109:	What did dinosaurs eat and drink when there was limited food and water?
1110:	If the sun went out, how long could life on Earth survive?
1111:	Do animals need sun or not?
1112:	Why do leopards have spots on their fur?
1113:	What does it mean when we say an individual is hybrid? what does it mean when we say an individual is purebred? How does non-disjunction insure that there will be differences in traits between generations?
1114:	Why is the sun important?
1115:	How do we exist?
1116:	What are different ways animals help spread seeds so that new plants can grow?
1117:	Which are the different systems involved in maintaining homeostasis?
1118:	How can we protect endangered aquatic species that are isolated by dams?
1119:	How do you decide which mountain lions are tagged and which ones are not? and what are the challenges when tagging a mountain lion and how often are they tagged? and lastly, how often do hikers encounter mountain lions in the Santa Monica Mountains?
1120:	How do low pH levels end up killing bacteria?
1121:	How many babies can a panda give birth to?
1122:	How do black panthers hunt?
1123:	The biggest butterfly has a wingspan of 12 inches. But I don't know the name of it. What is its name and color?
1124:	We know that we speak with the help of vocal cords. Could animals also be able to speak like humans do, if they had the same vocal cords?
1125:	Can plants use CO₂ released during respiration for photosynthesis?
1126:	What are the ethical considerations about dinosaur cloning?
1127:	Which animal has thick fur to protect it from attacks by predators?
1128:	What are the dinosaurs relatives?
1129:	Do rats fart more or less than cows?
1130:	How many teeth can a spinosaurus have?
1131:	How does the climate (cold, hot, rain, etc.) affect the marine life?
1132:	If we all came from a single cell, that is we have evolved from one single cell which went through rapid cell division. How is it possible for a single cell which has no brain to think on it's own and become a monkey or a dinosaur or something else? Even if you say it evolved during it's cell division, How is it possible? Because it is the first cell, it can't have genetic variations and so on.
1133:	Are spiders and their webs living? If yes, why?
1134:	How do dogs hear higher pitches than us? And what colors can dogs see?
1135:	What causes the change in the prodigiosin production?
1136:	Because everything in a farm depends on grass, what would happen if the grass were unhealthy in the farm?
1137:	How do fossils provide evidence of continental drift?
1138:	Do horses have wings?
1139:	Do you guys help save the Monarch butterflies?
1140:	Do crabs get itches? And how do they scratch?
1141:	Where do we get our supply of oxygen?
1142:	Why are human beings the only species that has a mind that can think and reason? Where did our ability to think come from?
1143:	How does enzymes work in our daily life and why do we have to learn about it because I know that we don't have to use enzymes in our daily life so why in the world are we learning this?
1144:	What animals reproduce both asexually and sexually?
1145:	How are animal cells and plant cells different? In which ways are they different?
1146:	What does ribonucleic acid do, and how does it affect your body?
1147:	Are dolphins' brains more capable of doing complex problems and solve ideas compared to other species on land and water? I know that dolphins have a bigger brain (1600 grams compared to 1300 grams from other species), but does that mean they are more complex and more intelligent overall compared to other species?
1148:	What would be the chemical reaction which provides the food for most organisms on Earth?
1149:	How does UV-C light kill bacteria?
1150:	Which organism posses both plants and animals characteristics?
1151:	How are animals cloned? And can we clone them intentionally to make many of the same exact animals?
1152:	I wonder: How were animals and men first exist. I know that at first they were cells, but how were they so much that turned them into animals, and then into humans? I wonder. How many cells would that take? I wonder.. how much time does it take to create a living being?
1153:	Did dinosaurs really existed and were hit by an asteroid?
1154:	Are there any viruses and/or diseases that can cause someone to be “mind controlled”? Either completely controlled or send the person into a zombie state?
1155:	What causes Black Mold? Can we develop some sort of disinfectant to prevent Black Mold?
1156:	What kind of colors do dogs see through their eyes?
1157:	Why can’t birds see glass?
1158:	What is our skin made out of?
1159:	Why are red blood cells red?
1160:	Does music have any effect on animal's behavior?
1161:	Hello, I’m a fifth grader at IV Elementary and I was wondering what decomposition is all about. Is decomposition important for the ecosystem, and how/why does it work? I’ve heard that nitrogen has something to do with it, and I’m wondering why that’s important. Thank you!
1162:	I don't understand: 1.) people claim that exposure to oxygen kills bacteria, fungi & viruses. Why is that if bacteria, fungi & viruses are living & all living organisms require oxygen?
1163:	How can fossils be found on different continents?
1164:	How to make spider web at home by using chemicals?
1165:	What does soil grow best in or what is in soil?
1166:	What are those chemicals from which spiders make their web?
1167:	Why do apples rot?
1168:	What would happen if a whale didn't have a blowhole?
1169:	Are whales fish?
1170:	I am trying to understand if plants and animals use the water that is released in the process of aerobic respiration? I am teaching a class and I want to better understand what happens to the “waste” water.
1171:	How do bears know when to wake up?
1172:	What are the various Genetic Engineering techniques currently used in science?
1173:	Why only humans are able to construct these big infrastructures (like our brain) as per we know evolution has been occurred to every species, then why not the cats or dogs are able to develop this much as we have been? To be precise why not other than humans any species has a developed brain as we have?
1174:	Why is life possible on Earth?
1175:	What extinct animal are coatis related to?
1176:	How much wood could a woodchuck chuck?
1177:	What does a Centriole look like? Could you submit a picture, please?
1178:	How do reptiles regenerate their body parts? Which parts do they regenerate? How do they do that? How many times? When?
1179:	I still don't understand why there are no snakes in Hawaii. I though some snakes can swim. If some snakes can swim then can they swim to Hawaii and live around there?
1180:	What is the difference between kingdom plantae and kingdom eubacteria. Need it please.
1181:	Which is more important to life on Earth, the chloroplast or the mitochondrion? I know we need photosynthesis for production of oxygen and energized electrons stored as glucose, but I also know that the first organisms were heterotrophs. Thank you.
1182:	How is it called an animal that is born in the water and then grows lungs?
1183:	Since a dog has 78 chromosomes in their body cells and humans have 46, are dogs more complex than humans due to having more chromosomes?
1184:	Why do I exist?
1185:	Hi there, can angler fish eat other angler fish?
1186:	What do pollinators like birds and insects help plants to do?
1187:	How long does it take to harden an egg after the shell material is in place? I’m assuming the egg is still quite soft as it leaves the bird.
1188:	Why are pandas black and white?
1189:	What do hedgehogs drink? Why do they need their spines?
1190:	Why were dinosaurs alive? Why did they die?
1191:	How cobras are super-fast? Why do their heads have a hood?
1192:	When was the first owl born and where did they come from?
1193:	How does your brain form when you are in your mom's womb?
1194:	What animal has the weakest stomach acid?
1195:	Why did Jane Goodall wanted to learn about chimpanzees?
1196:	Do hogs have veins?
1197:	Yesterday at Boyd Hill Nature Preserve I saw a large egret eating a fish in a shallow stream for a while and then crouch down in the water so her/his body was up to the wings in water. A fluid of white and slightly oily scum emerged and flowed with the gentle water currents away from the bird. I did not attempt to photograph. What was happening there?
1198:	What substances are termed by cholesterol?
1199:	I was told the chirping sounds birds make in the mornings trigger leaves to release the oxygen. Is this true?
1200:	What can live without sunlight?
1201:	What role does gene expression play in determining traits of an offspring?
1202:	Are coyotes diurnal or nocturnal? Why do I sometimes see coyotes during day time around the place where I live?
1203:	We are all students. I am a mom and an employee. I cracked an egg and a yolk plus an extra little egg was inside it . Why? . It was creepy cool. No it was not another yolk. I have seen eggs with double yolks before. I’m just wondering.
1204:	What makes Tardigrades indestructible?
1205:	How does the structure of a cell suggest its function? What are some examples of that?
1206:	Why do fingerprints form when your are in your mother's womb?
1207:	What similarities are there between all animal kingdoms?
1208:	How many living things are there in the world?
1209:	I'm currently working on a project on deforestation and I was tasked to find out more info about deforestation. May you please give me info and explain how it affects biodiversity?
1210:	What is the relation between continental drift and the evolution? How four very different kinds of ant/termite eaters could occur in India, Africa, South America, and Australia?
1211:	I know that it is possible for certain animals to regrow limbs, but is it possible for humans to regrow limbs sometime in the future? Why are humans not able to regrow limbs but other animals can?
1212:	What would happen if the sun stopped shining?
1213:	Dolphins and whales are called mammals, why?
1214:	How many number of coils of DNA stand in a single chromosome?
1215:	How does a panda family look like?
1216:	Are pandas related to racoon?
1217:	Dear USCB Science Line, Hello! How are you all are doing? With all do respect I have read your story online about cows that fart and burp on your website that was dated back in 2011 ( here. I wanted to let you know that not only cows fart and burp but all animals and us humans burp and fart too sometimes. Now I’m all for improving the environment and climate and healthy food from plants which provide health benefits. So why should we do something about cows when all animals and humans do the same thing? I don’t see what will solve the problem when it comes to burps and farts. Can you please email me back with an answer? I’m sorry, please do forgive me for sending this email if you all happen to not like what I wrote here. Thanks and God Bless!
1218:	Why do spiders have eight legs?
1219:	Peeking at Penguins: Poop from Space.
1220:	How long would humans last if there were no more trees?
1221:	What can scientists infer about the observation of the fossils now found widely spaced across the globe that actually lived on the same early earth landmass?
1222:	Why does more muscle mean more strength? And how can we test that our body has a pull on it (gravitational, depending on our mass)?
1223:	Why don’t the palms of the hands and soles of the feet have hair follicles, but the skin of the arms and legs do? Hint: Think of the function of the different structures and their locations.
1224:	Red blood cells are damaged, if damaged, how is it possible for them to be replaced?
1225:	What is the future of biological batteries?
1226:	Which animals don't have blood?
1227:	Why do we have facial hair?
1228:	Students learning and helping in the Coronavirus effort.
1229:	How are Whiskers and Antennas different?
1230:	What is Covid-19?
1231:	Animals living in forests have self treatments if they get sick. Humans have all facilities and can see a doctor if we get sick. I see that alligators have strong immunity. Animals eat disgusting food that humans cannot eat. I believe that animals have stronger immune systems than human beings. Am I right?
1232:	Why are most men taller than women?
1233:	What is the meaning of life?
1234:	How can you tell if something is alive?
1235:	How long does it take to make honey? How is it made?
1236:	What are some of the prehistoric animals that are extinct and share a DNA with some of the animals that are living today? Where can I find research information on this topic?
1237:	How long can any virus live outside of our bodies?
1238:	Why does it take so long to develop a vaccine?
1239:	Does Photosynthesis directly or indirectly affect the needs of an animal?
1240:	Why are whales mammals and not fish? What are the characteristics of mammals?
1241:	Why coronavirus is so dangerous compared to the flu virus?
1242:	Do oxygen + hydrogen + carbon dioxide kill a virus?
1243:	Does silk have the strength to make an armor as the Mongols used to have?
1244:	As cells constantly divide, why don't we end up with way too many cells?
1245:	During sexual reproduction, what happens if the egg lets in two sperm from 2 different men?
1246:	DNA polymerase found in E. Coli cells synthesizes DNA around 1000 base pairs per second. How long will it take one DNA polymerase to synthesize one strand of the E. Coli genome?
1247:	Dear UCSB ScienceLine: Despite that cats are four-legged and walk on their toes, shouldn't the fact that cats retain a large foot indicate descent from a bipedal (upright) ancestor? As the elongated foot is a hallmark of bipedalism, my understanding of evolution tells me that kitty would never have evolved an elongated foot if her ancestors had never walked upright. Please help!
1248:	If a cell's wall is not alive then how does the cell's wall grow?
1249:	What are the functional properties of silk? Is there any academic or scientific research available to verify these properties?
1250:	Why is your skin an organ?
1251:	Hi, I would like to know what kind of fossil is this one that my father found. To me it looks like a saber tooth. Can you tell us from the picture ?.
1252:	What are the steps to follow in order to have ready the vaccine against Covid19?
1253:	If dinosaurs had survived the Yucatan comet 66 million years ago, or it had never happened, what is the chance Homo sapiens would still be here?
1254:	What is the importance of molecules for growth and maintenance?
1255:	Dinosaurs today and paleontologists using robotics and computer based technology to learn about them more than ever before.
1256:	Before Homo appeared there was Australopithecus, Ardipithecus, Orrorin, and Sahelanthropus about 7 million years ago. Were these genera better hunters than Homo? Were many big carnivores, like the sabre tooth cat, going extinct during their lifetimes? Maybe dinosaurs would have changed their evolutionary path. Or sent them into extinction, or vice versa?
1257:	How does the structure and make-up of the cell wall make it retain its structure even when no longer living? Does this also apply to the cell membrane of an animal cell?
1258:	I need to know 10 ways in which weather affects humans on Earth.
1259:	How the viruses of influenza, common flu and covid 19 are all related?
1260:	How can fossils get to each other from Africa and south America?
1261:	I would like to know if viruses and prions have membranes.
1262:	Which is the most dangerous virus for human beings that scientists know so far?
1263:	Are people getting immune to the Covid19 after they contract it and survive? For how long?
1264:	What type of consumer is a Venus fly trap?
1265:	What is the mitochondria? Is it in all human cells?
1266:	What is cell division?
1267:	I would like to know if boiling home canned goods for 10 minutes kills the spores, bacteria and toxins which produce botulism, so that it is then safe to eat. Thank you so much for your answer.
1268:	If COVID19 is a virus, small, then what kind of material can stop the droplets containing it from entering into our body, through our eyes, nostrils and mouth? What are the characteristics of this material which can stop the droplets? Is it a synthetic material, or cotton, or silk, or what?
1269:	Is human blood blue?
1270:	If estimated how long will we have on earth before our world is non inhabitable?
1271:	How does eyesight work?
1272:	What separates humans from other life forms? Is it one feature, or is it multiple?
1273:	How many species of fish have been discovered, and what kinds of new species are being found?
1274:	Are there any mammals that glow in the dark?
1275:	What is an mRNA Covid-19 vaccine and how is it different from other vaccines?
1276:	How good or bad is that the Covid19 virus is mutating?
1277:	Some people are saying they will not take the Covid19 vaccine and my parents are listening to them. Can you write about the reasons why we have to get the vaccine when the time comes so I can convince my parents that we all have to take it?
1278:	What developments have been made for prolonging living conditions that would sustain life outside of earth?
1279:	How fast can a spider build a web?
1280:	Is it possible for a vegetarian mammal to become a meat eater (non-vegetarian)?
1281:	Vultures are known for stomach acid that kills many pathogens but there are no vultures in Australia. Why doesn’t Australia run wild with these pathogens like botulism, rabies and anthrax? Thank You,
1282:	What are the different gases that living things produce? What makes a gas have an odor?
1283:	Can a city be considered an ecosystem?
1284:	Is it possible to start manufacturing all vaccines only mRNA vaccines instead of the traditional ones using virus?
1285:	What is an adenovirus?
1286:	How can scientists work with viruses if they are so small? Can you see them when you work with them? How can you work with DNA and put it inside the virus?
1287:	What are muscle cells?
1288:	Are opossums and kangaroos related?
1289:	How was the first person ever on Earth born?
1290:	How far are scientists from the day when the genetic code of a person could be changed in order to cure an illness/disease or prevent it?
1291:	Are seeds and eggs living things?
1292:	Can a virus live in oxygenated blood?
1293:	Do birds sweat?
1294:	Are spider's webs abiotic or biotic?
1295:	Which organs of the human body can regenerate, apart from the skin?
1296:	Do we need the sun?
1297:	Why do plant cells look so close together when animal cells look like they're floating around?
1298:	I would like to know if there are any funny facts about eagles. I am researching eagles and would like to know if you have scientific facts about them that are interesting or funny. Thank you. Note: For database space reasons, more answers for this question can be found here.
1299:	I would like to know if there are any funny facts about eagles. I am researching eagles and would like to know if you have scientific facts about them that are interesting or funny. Thank you. Note: For database space reasons, more answers for this question can be found here.
1300:	Hello, I am doing research on lions, and I’m curious. I have learned a lot already. Do you have any scientific research about lions that is funny or interesting?
1301:	Hello,I’m doing research on the gorilla. Do you happen to have any fun facts or funny scientific information about gorillas? I would like to learn more!
1302:	Hello,I’m doing research on the gorilla. Do you happen to have any fun facts or funny scientific information about gorillas? I would like to learn more!



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