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What happens during gas exchange?

A. Red blood cells exchange carbon dioxide for oxygen.
B. White blood cells enter the bronchioles.
C. Alveoli enter the nuclei of red blood cells.
D. Hemoglobin moves from red to white blood cells.​

User Nakiya
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2 Answers

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Red blood cells exchange carbon dioxide for oxygen

User Avalancha
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The answer would be letter a
User Royce Raju Beena
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