alleryStart learning →Breathed-out air has 100 times more carbon dioxide. Why?
AMucus is made of it also
BLungs turn nitrogen into it
CThe nose adds it to air
DCells release it in respiration
Answer & Solution
Correct answer: D. Cells release it in respiration
Cells produce carbon dioxide during respiration, blood carries it to the lungs and it is breathed out.
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