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Biology, 29.01.2020 15:55 sierransha08

When a person inhales, oxygen fills tiny air sacs in the person's lungs. next, the oxygen moves from these air sacs into small blood vessels that line the lungs, and then it moves into the bloodstream so that it can be transported around the body.

oxygen moves by random molecular motion from the air sacs of the lungs to the blood vessels because the concentration of oxygen in the air sacs is higher than the concentration of oxygen in the blood vessels.

this movement of oxygen molecules from an area of higher concentration to an area of lower concentration is known as

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When a person inhales, oxygen fills tiny air sacs in the person's lungs. next, the oxygen moves from...

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