Biology, asked by virsakhan1, 8 months ago

why in birds its complete ventilation but in human its incomplete?

Answers

Answered by mukherjeepintu85

Explanation:

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Answered by jitendersinghdtl

Explanation:

Birds have lowers weights than human. ... Bird lungs do not expand or contract like the lungs of mammals. In mammalian lungs, the exchange of oxygen and carbon dioxide occurs in microscopic sacs in the lungs, called alveol

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