It could be compared to sand
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Answer:Cell membranes do not make nutrients (or energy) for the cells. This is the function of the mitochondria by the electron transport
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i believe it's A, C and D but I could be wrong
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Lower
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they have experience in there breath rate they've probably been doing it for a minute. while on the other hand someone who is not used to working out has a hard time getting there breath back and are breathing heavily
