Humans are different for the same reasons that
members of any species are different. Except
for identical twins, no two people are the same
genetically. Even identical twins look slightly
different, because their genes have interacted
with the environment in slightly different ways.
Yes, people are one kind of animal. Mammals are
one kind of animal (furry ones with backbones).
Primates are one kind of mammal. And humans
(Homo sapiens is our official name) are one kind
It's important to remember that species exhibit
lots of variation--no two individuals are exactly
alike. Humans are just like other living things in
There are many ways you can say that humans are
different. One way is in our minds. Everyone has
their own mind, which collects experiences as they
grow up. Some of these experiences will be shared
with other people, and some of them will be unique
to that person. For example, twins will grow up
with many similar experiences, but not all of them
will be exactly the same.
Animal minds are just as different from each
other. The mind of one cat is different from the
mind of another cat, and that will be true no
matter what their age, gender, color, or race is.
We are all the same species, because any man
and woman can have children, and their children
can have children. On the other hand, cats and
dogs cannot have children together, because they
are different species. (There are some more
complicated cases. For example, horses and donkeys
can have children called mules, even though they
are different species. But mules cannot have
There are many races of humans, but this is not
really an important difference. Race is just a
way to say how we look, but it doesn't say
anything about how we think.
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