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Biology, 03.08.2019 04:00, cezzypezzyceezy776
For example, oxygen (o₂) diffuses from the air sacs into the capillaries of the lungs because there is a concentration of oxygen in the alveoli (air sacs) than the capillaries.
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For example, oxygen (o₂) diffuses from the air sacs into the capillaries of the lungs because there...
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