Environmental Sciences, asked by ssharmak209, 11 months ago

Why do we need fresh air?

Answers

Answered by sireeshaksr81

Answer:

fresh air cleans our lungs

Answered by Captainvishaal

Explanation:

we need fresh air to breathe... if the fresh aur has been stopped flowing then the air will contain more CO2 and the ratio of oxygen will decrease. So we need fresh air to breathe.. because it contains more oxygen

hope it helps.....

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