Select your answer:
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Muscular › ViewMuscles cells will have more mitochondria cells than any other human cells because
A. It produces the most protein
B. It is red and red is hot
C. It uses the most energy
D. It needs to produce sweat when the body overheats.
Physical › View
Which system does physical activity not help
A. Cardiovascular
B. Respiratory
C. Musculoskeletal
D. your gaming system