Question

6
a.
Which of the following is the correct path of carbon dioxide as it leaves the lungs?
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Answer 1

Answer:Carbon dioxide (CO2) is a waste product of cellular metabolism. You get rid of it when you breathe out (exhale). This gas is transported in the opposite direction to oxygen: It passes from the bloodstream – across the lining of the air sacs – into the lungs and out into the open.

Explanation:

Answer 2

Answer:

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