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Biology
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OpenStudy (anonymous):
BBB
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OpenStudy (anonymous):
Aerobic exercise helps to strengthen the cardiovascular system. It can also be called cardio exercise. It CAN be carried out for a sustained period of time..so what's left?
OpenStudy (anonymous):
It does not, however, help strengthen the muscles that help us breathe..it strengthens the heart.
OpenStudy (anonymous):
So I do believe your answer would be A.
OpenStudy (anonymous):
thank you, @lovelylolita55
OpenStudy (anonymous):
You're welcome!
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