all humans have microorganisms in their intestinal tract. what is the benefit of having them?
...
all humans have microorganisms in their intestinal tract. what is the benefit of having them?
a.
they prevent harmful bacteria from entering the intestines.
b.
they allow humans to consume uncooked meat.
c.
they prevent gas from building up in the stomach.
d.
they send a hungry signal to the brain when the stomach is empty.
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