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Are all chemicals harmful to future generations?
Do bug sprays harm babies? What exactly causes
air pollution? What type of diseases does
pollution cause for humans? If pollutions was to
enter a black hole what would happen?
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Question Date: 1999-01-25 | | Answer 1:
ARE ALL CHEMICALS HARMFUL TO FUTURE
GENERATIONS?
No. Many chemicals degrade
within several years. Some chemicals, called
halogenates, take many years to degrade and will
be in the atmosphere when you have your own
children! Some of these chemicals are not being
made for use in the United States any more but are
sent to other countries or made in other
countries. One example is
DDT. -------------------------------- DO BUG
SPRAYS HARM BABIES?
Yes. Even if the bug
spray doesn't harm you or an adult, babies are
very sensitive to them and can be harmed. This is
the same for almost all baby
animals. -------------------------------- WHAT
EXACTLY CAUSES AIR POLLUTION?
There are two
chemical groups that cause air pollution. They
are called NOx (nitrates) and VOC's (Volatile
Organic Compounds). In southern California, these
chemicals come mostly from cars. They undergo a
chemical reaction in the air during the day with
sunlight and form ozone and other harmful
chemicals like peroxyacetyl nitrate. When the sun
goes down and people stop driving their cars and
go home at night, the amount of pollution
decreases. In other parts of the country, another
chemical group also causes pollution. It is called
SOx (sulfates). This comes from coal-burning
power plants and works much like
NOx. -------------------------------- WHAT
TYPE OF DISEASES DOES POLLUTION CAUSE FOR
HUMANS?
Pollution can cause asthma in
children and give many children allergies. In
older people with heart problems, pollution will
make their heart worse. If the pollution is
really bad, pollution will make your chest hurt
and eyes water and sting. Many people loose their
ability to breath well after living in air
pollution for several years. I have only 85% of
my lung capacity due to
pollution. -------------------------------- IF
POLLUTION WAS TO ENTER A BLACK HOLE WHAT WOULD
HAPPEN?
The whole chunk of pollution would
shrink down to a very tiny speck because the
gravity is so strong in a black hole. Even light
is attracted to a black hole! But because black
holes are so far away it would be too expensive to
transport pollution there. Besides, who would
drive?
| | Answer 2:
ARE ALL CHEMICALS HARMFUL TO FUTURE
GENERATIONS?
Everything you see and
everything you are, are made up of chemicals....so
to answer your question, in short, No. The food
you eat helps you.....if your food was
contaminated then it might hurt you either short
term or long term. So to answer your question,
which is extremely broad--what do you
think? Are Pesticides bad or good?They can do
damage when improperly used, but they have
increased the amount of food available.
| | Answer 3:
WHAT EXACTLY CAUSES AIR POLLUTION?
This has
been a popular question. I have sort of
addressed it in several other of the questions
posted, so please read those answers. There are
all different types of air pollution. The three
main areas of current concern in atmospheric
pollution (at least those that I know about) are
acid rain, ozone depletion, and greenhouse gases.
Acid rain is when pollutants in the atmosphere
cause the rain that falls to be much more acidic
than normal. Acid rain, like acid, erodes
structures and contaminates fresh water ponds,
lakes and rivers. Organisms need around neutral
pH (not acidic and not basic) to live. If their
environment becomes too acidic or basic, the
organisms will die. Also, acid rain is not very
good for humans as you might have guessed. This
is particularly bad if the acid rain contaminates
the drinking supply. Acid rain also causes
deforestation. Acid rain is mostly a problem for
highly industrialized parts of the world,
particularly industry that requires a lot of
fossil fuel burning. Burning of fossil fuels
produces nitrogen and sulfur "oxides" that mix
with hyrdo-chloric acid in the atmosphere to
produce acid rain. There is a lot of fossil fuel
burning industry in the United States'
mid-atlantic/Ohio valley region which contains
Pennsylvania, Ohio, and West Virginia, among other
states. Greenhouse gases I have discussed in
previous questions. Carbon dioxide is the main
problem gas because it has been steadily
increasing for the last 100 years or so at a very
high rate. Just like a greenhouse works to allow
the sunlight to come in through the glass windows
and heat up the inside (where the plants are
growing) but not let the heat escape, this is
exactly how the greenhouse gases work. The
presence of carbon dioxide, methane and water
vapor in the atmosphere allows the sunlight to get
to earth and then traps the heat from the sunlight
in the earth's atmosphere, so the earth heats up.
-Why is the global warming a problem? Ozone
depletion is something that is occurring in the
highest level of the atmosphere, the stratosphere,
where ozone is normally found. Ozone is a very
necessary part of earth's atmosphere. It acts
like a filter to the sunlight. White (visible)
light can be broken into a rainbow of colors
representing the visible spectrum. However, there
are other types of "light" that have more and less
energy than the visible types of light that humans
can see, for example UV light/radiation has more
energy than white light. Infrared has less energy
than white light. Humans can't see these other
types of light, but some organisms can. The sun
produces "light" or radiation in all these types
(or levels of energy). Certain types of light are
very harmful to life on earth, for example very
short UV radiation (=very high energy) will damage
a cell's DNA and cause cancer in all organisms.
The ozone layer protects life on earth from the
sun's damaging UV rays by absorbing the UV but
letting the visible light/white light to pass and
reach the surface of the earth. So life on earth
is very dependent on the ozone layer for
protection. Man-made chemical compounds such as
CFCs (freon) break the ozone down. A huge ozone
"hole" was found over Antarctica due to worldwide
production of CFCs. The world's industrial
nations have banned use and production of CFCs to
save the ozone layer. But many developing
countries still use CFCs and therefore the ozone
layer continues to be depleted. CFCs are
extremely good refrigerants (freon used in air
conditioners and refrigerators) and were commonly
found in aerosol cans to help keep the solution
suspended (hair sprays, shaving cream, lysol,
etc.). They are cheaper and more effective
refrigerants and aerosol additives than
alternative chemicals. That's why the developing
nations can't afford to not use them. Can you
think of a way the world's industrial countries
might persuade the developing countries to stop
using and producing CFCs so that the ozone layer
would not continue to be broken down?
| | Answer 4:
ARE ALL CHEMICALS HARMFUL TO FUTURE
GENERATIONS?
First, all things are
chemicals. Even you and I are made of millions of
chemicals. Some chemicals are harmful, others
are only harmful if you get a lot. Some are fatal
in extremely small doses. It all depends on the
chemical.
-------------------------------- DO
BUG SPRAYS HARM BABIES?
Some can. Babies
are more sensitive to many chemicals. To be on
the safe side, it is best to protect babies and
small children from being exposed to insecticides
(bug
sprays).
-------------------------------- WHAT
EXACTLY CAUSES AIR POLLUTION?
Many things
can. The worst offenders are cars and factories
that burn things. For example, they might burn
coal to make
electricity.
-------------------------------- WHAT
TYPE OF DISEASES DOES POLLUTION CAUSE FOR
HUMANS?
Pollution can cause anything from a
mild irritation of the eyes and throat to lung
damage to death depending on the concentration.
Check out these sites on air
pollution: http://www.jp.kids-commons.net/vc96/vc-13/airintro.htm, http://www.mcclellan.af.mil/rideshare/healths_impacts_of_air_pollution.htm thanks
for asking,
| | Answer 5:
> ARE ALL CHEMICALS HARMFUL TO FUTURE GENERATIONS?
The answer to this is complex. Maybe not all
chemicals are hamful, but sometimes we can think
for a long time that some chemical is not harmful
and then discover later that it is. So to be
safe, it is best to limit the amount of chemicals
we put in our oceans and air. An example is
chlorofluorocarbons, or CFC's. CFC's are used in
refrigerators and used to be used in spray cans.
People used to think this chemical
was completely harmless, but now we know that
it is destroying the ozone in the stratosphere,
and that causes more people to get sun burnt and
skin cancer.
> WHAT EXACTLY CAUSES AIR
POLLUTION? The cause of air pollution depends
on the specific type of pollution. Most air
pollution comes from burning stuff. Coal and oil
and gasoline, for example, all have sulpher in
them. That's just the way these things are. The
sulpher is natural. But when people burn them the
sulpher turns into sulpher dioxide, which makes
smog. Sometimes people put pollutants into things
they burn for a good reason, but they don't see
the bad result. For example, they used to put
lead into gasoline to help cars run better, but
when the gasoline burned, the lead would get into
the exhaust and settle by the roadside and get
into plants and into the ground water. Where did
the lead come from originally? Lead comes from
rock in the ground. It is not considered a
pollution there becuase it is trapped inside
minerals in the rock. But people who wanted to
make cars run better would mine the rock that had
the lead (the still do this because we use lead
today for a lot of other things) and would put
some in the gasoline. So in the case of lead the
pollution comes from rock that gets mined for its
lead, and then the lead gets put in gasoline by
people, and then the lead gets into the air and
the ground water by burnign the gasoline inside a
car engine.
> WHAT TYPE OF DISEASES DOES
POLLUTION CAUSE FOR HUMANS? Allergies, athsma,
cancer, respiratory illness, and lots of others!
Sewage type pollution causes problems in people's
stomachs and intestines and can cause diseases
like giardia, cholera, and other forms of throwing
up and diarrhea.
> IF POLLUTION WAS TO
ENTER A BLACK HOLE WHAT WOULD HAPPEN? >
Well, I wouldn't worry about it. We will
never see that pollution again!
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