Multiple Choice
If you measure the air a person has inhaled and exhaled,you will find that the concentrations have ______ in the exhaled air.
A) higher O2 concentrations and lower CO2 concentrations
B) lower O2 concentrations and higher CO2 concentrations
C) lower O2 and CO2 concentrations
D) higher O2 and CO2 concentrations
Correct Answer:

Verified
Correct Answer:
Verified
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