Question

3. Exhaled air contains more
(a) oxygen
(b) carbon dioxide
(c) nitrogen
(d) none of these
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Answer 1

Answer:

Exhaled air contains less oxygen and more carbon dioxide, it is also saturated with water vapour. Exhaled air contains: 78% nitrogen.

So, c) nitrogen is the correct answer.

Answer 2

Answer:

carbon dioxide

Explanation:

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