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It's considered to be an advantage to have lungs with increased capacity, because with increased capacity

Athe chest looks more "buff."
Banaerobic exercise is easier.
Cthe lungs will fight off colds and influenza.
Dthe lungs can better exchange oxygen and waste products in the blood.

Verified Answer :

DThe lungs are how oxygen is exchanged in and carbon dioxide is taken out. Carbon dioxide is then put back into the air around us. A. does not work because that is an opinion. B. is also an opinion. C. does not deal with the question at all.

Answer:

D. the lungs can better exchange oxygen and waste products in the blood.

Explanation:

Lungs with increase capacity actually helps to a better exchange of oxygen and waste products in the blood, because lungs have the function of exchanging oxygen for carbon dioxide. You inhale oxygen and exhale carbon dioxide.

Moreover, the oxygen you take is going directly to bloodstream and is carried all over the body, giving oxygen to all cells, tissues, muscles, during this process, the oxygen taken by cells is replaced by carbon dioxide, which is the waste, then the bloodstream carries this waste back to the lungs to be expelled.

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