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During cellular respiration, every living thing in this food web uses ______ gas and releases ______ back into the environment.

A. carbon dioxide: oxygen
B. oxygen: carbon dioxide
C. carbon dioxide: hydrogen
D. carbon dioxide: water vapor

During cellular respiration every living thing in this food web uses gas and releases back into the environment A carbon dioxide oxygen B oxygen carbon dioxide class=

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newsies
B. Oxygen; carbon dioxide. Animals breathe in oxygen and release carbon dioxide.
WorldlyGlass49
During cellular respiration, every living thing in this food web uses B. oxygen gas and releases carbon dioxide back into the environment.
Plants are the only living things that do quite the opposite. 

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