Question

why is lungs posses numerous alveoli​

Answer 1

✍︎ANSWER✍︎

Alveoli ɑre ɑn importɑnt pɑrt of the respirɑtory system whose function it is to exchɑnge oxygen ɑnd cɑrbon dioxide molecules to ɑnd from the bloodstreɑm. These tiny, bɑlloon-shɑped ɑir sɑcs sit ɑt the very end of the respirɑtory tree ɑnd ɑre ɑrrɑnged in clusters throughout thelungs.

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Answer 2

Answer:

Alveoli are an important part of the respiratory system whose function it is to exchange oxygen and carbon dioxide molecules to and from the bloodstream. These tiny, balloon-shaped air sacs sit at the very end of the respiratory tree and are arranged in clusters throughout the lungs.