Multiple Choice
Human cannot survive long at altitudes greater than 6000m because _________.
A) alveoli become too small at the lower atmospheric pressures
B) the diffusion of O2 becomes too low at that atmospheric pressure
C) the partial pressure of O2 becomes less than half that at sea level
D) the diaphragm cannot be contracted enough to produce a full breath
Correct Answer:
Verified
Correct Answer:
Verified
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