Biology, asked by vidhip865, 8 months ago

why lungs are divided into very small sac like structures ??​

Answers

Answered by Vmusale
2

Explanation:

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Answered by kareena820
2

Answer:

Easly tansport oxygen to the blood vessels which surrounded the air sacs and also air sacs have a thin film of oxygen which help to absorb oxygen quickly.

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