Question

What percent of carbon dioxide in our exhaled air?​

Answer 1

Answer:

The gas exhaled is 4% to 5% by volume of carbon dioxide, about a 100 fold increase over the inhaled amount.

Explanation:

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Answer 2

Answer:

The average human exhales about 2.3 pounds of carbon dioxide on an average day. (The exact quantity depends on your activity level—a person engaged in vigorous exercise produces up to eight times as much CO2 as his sedentary brethren.)

Explanation:

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