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OpenStudy (anonymous):
The major function of the respiratory system is to: A. maintain the digestive system of the body so that it can continue to operate. B. cleanse the body of toxins, poisons, and harmful chemicals. C. give the heart the energy it needs to circulate blood. D. provide oxygen to the body and eliminate carbon dioxide from the body.
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OpenStudy (love_to_love_you):
d I believe.
OpenStudy (texaschic101):
I agree....it is D
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