Question

The alveoli have tiny walls. Why this is useful?

Answer 1

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As it moves through blood vessels (capillaries) in the alveoli walls, your blood takes the oxygen from the alveoli and gives off carbon dioxide to the alveoli. ... This large surface area is necessary to process the huge amounts of air involved in breathing and getting oxygen to your lungs.♥️

Answer 2

Answer:

Alveoli have tiny walls so that diffusion of oxygen and carbon dioxide takes place in the lungs easily.