Answer 1:
Yes, so animals and humans basically have
similar cycles. The way we breathe may me
different but what we breathe and what we exhale
is basically the same. So the oxygen cycle goes
like this: plants create oxygen using
photosynthesis, animals and humans breathe this
oxygen, and then they exhale carbon dioxide. This
is why we need more plants; they give us clean and
healthy air to breathe. Pollution creates more
carbon dioxide and we should be breathing in
oxygen, not carbon dioxide.
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