Multiple Choice
The rate of gas exchange in mammals is maximized by
A) an exceedingly high partial pressure of O2 in the blood.
B) the opening of the larynx (voice box) into the trachea.
C) an enormous surface area for gas exchange.
D) the animals' small increase in size during inhalation.
E) the production of mucus and surfactants.
Correct Answer:

Verified
Correct Answer:
Verified
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