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Biology, 20.09.2019 10:30 kris22elizondop9v1bb

Which occurs as part of gas exchange?
oxygen is exhaled
carbon dioxide is inhaled
carbon dioxide diffuses from the trachea to blood in capillaries
oxygen diffuses from alveolar sacs to blood in capillaries

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Which occurs as part of gas exchange?
oxygen is exhaled
carbon dioxide is inhaled
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