In jumans oxygen enters the body and carbon dioxide leaves it through the lungs.The lungs are made of thousands of tiny air sacs surrounded by blood vessels.How does this help the teo gases to diffuse

In jumans oxygen enters the body and carbon dioxide leaves it through the lungs.The lungs are made of thousands of tiny air sacs surrounded by blood vessels.How does this help the teo gases to diffuse quickly into and out of the blood?

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In jumans oxygen enters the body and carbon dioxide leaves it through the lungs.The lungs are made of thousands of tiny air sacs surrounded by blood vessels.How does this help t…

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