It's considered to be an advantage to have lungs with increased capacity, because with the increased capacity
a. the chest looks more "buff."
b. the lungs will fight off colds and influenza.
c. the lungs can better exchange oxygen and waste products in the blood.
d. anaerobic exercise is easier.

C

Explanation:

Blood needs oxygen which the lungs provide and the waste products cannot be ridden of without oxygen because oxygen is what allows the blood to circulate and clear out.

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b) the heart is a pump made of muscle and that is difficult to grow in the lab.