Because they evolved them from when they were single celled organisms
Human sperm does not have legs. Instead it has a flagella, which is a tail-like structure, that helps it move around.
from not running. you should run more so this will not happen so often
It depends. Some humans are born with one leg, but most are born with two.
obviously 2! pretty easy i reakon but i think its 3 maybe i dont know
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