Respiration returns carbon dioxideoxygennitrogen to the atmosphere

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asked Sep 11, 2016 119k views

2 Answers

Matthew Watson · Answer 1 · 2016-09-13T13:21:43+0000

when we breath in out lungs take in air and use the oxygen and when we breath out the carbon dioxide which our lungs don't use returns to the air

Bholtbholt · Answer 2 · 2016-09-17T20:31:47+0000

respiration returns carbon dioxide to the atmosphere
humans cannot process nitrogen
humans breathe in oxygen and release carbon dioxide back into the air

Respiration returns carbon dioxideoxygennitrogen to the atmosphere

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