Which of the statements accurately describes the role of your heart in delivering oxygen to your body cells?
a. the heart pumps oxygen through the alveoli, which deliver it to body cells.
b. the heart pumps oxygen-rich blood to your body cells.
c. the heart takes in oxygen from the environment and delivers it to cells.
d. the heart breaks down carbon dioxide into carbon and oxygen.
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Which of the statements accurately describes the role of your heart in delivering oxygen to your bod...
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