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Mammalian lungs have an enormous number ...

Mammalian lungs have an enormous number of minute alveoli (air sacs). This is to allow

A

more space for Increasing the volume of inspired air

B

more surface area for diffusion of gases

C

more spongy texture for keeping lungs in proper shape

D

more nerve supply to keep the lungs working

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The correct Answer is:
A
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