When a person is exercising, CO2 builds up in the blood. What effect would this have on external respiration?
A) There would be increased diffusion of CO2 out of the blood and into the lungs and decreased ventilation to move it out of the body.
B) There would be decreased diffusion of CO2 out of the blood and into the lungs and decreased ventilation to move it out of the body.
C) There would be decreased diffusion of CO2 out of the blood and into the lungs and increased ventilation to move it out of the body.
D) There would be increased diffusion of CO2 out of the blood and into the lungs and increased ventilation to move it out of the body.
Answer: D
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