Which of the following
does NOT characterize the
human respiratory system? *
A. the trachea branches into two
bronchi
B. gas exchange takes place across
alveolar capillary membrane
C. contraction of the diaphragm
muscle expands the thoracic cavity
and permits the lungs to fillD.none of these
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Answer:
I think it's A
Explanation:
Please mark me as a brainliest
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