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AleksAgata [21]
3 years ago
8

_________7. During strenuous exercise, skeletal muscles use up ___________ and produce large amount of ________, which causes pa

in and fatigue in the muscle.
A. Oxygen, lactic acid C. CO2, pyruvic acid
B. Pyruvic acid, lactic acid D. Pyruvic acid, CO2
Biology
1 answer:
DanielleElmas [232]3 years ago
3 0

Answer:

A. Oxygen, lactic acid

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