1.Christian is playing basketball what must be the reason why after an hour is heart beats faster?it is because ___________is needed by the body cells when he did that reduce tooth activity.
A. Less oxygen
B. More oxygen
C. Less carbon dioxide
D. More cabon dioxide
Non-sense=Report
A. Less oxygen
B. More oxygen
C. Less carbon dioxide
D. More cabon dioxide
Non-sense=Report
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