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Biology, 31.05.2020 17:57 thelongneckkid

How does the air we inhale compare to the air we exhale?
A. The air we inhale has the same percentage of oxygen as the air we exhale.
B. The air we inhale has a greater percentage of oxygen than the air we exhale.
C. The air we inhale has the same percentage of carbon dioxide as the air we exhale.
D. The air we inhale has a greater percentage of carbon dioxide than the air we exhale.

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How does the air we inhale compare to the air we exhale?
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