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lvida lvida
wrote...
Posts: 366
Rep: 9 0
5 years ago
In the human respiratory system, gas exchange occurs across the cells of the ________.
A) diaphragm
B) trachea
C) bronchi
D) alveoli
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cgara59cgara59
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Posts: 191
5 years ago
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lvida Author
wrote...
5 years ago
Makes more sense now, have a good weekend!
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