Multiple Choice
Humans have difficulty obtaining enough oxygen while breathing at high elevations because _______ at low elevations.
A) CO2 makes up a higher percentage of the air than it does
B) the temperature is lower than it is
C) the barometric pressure is higher than it is
D) the air is drier than it is
E) the partial pressure of O2 is lower than it is
Correct Answer:
Verified
Correct Answer:
Verified
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