charlotte202 charlotte202

24-04-2017
Biology

contestada

Which of these is NOT an effect of exercise on veins?
a. Exercise helps force blood through the veins.
b. Exercise helps keep blood from accumulating and stretching veins.
c. Exercise helps keep the walls around veins strong.
d. Exercise allows blood to pool in veins.

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KrzysztofMendel KrzysztofMendel

24-04-2017

I think the answer is B but I'm not sure.

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