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Olenka [21]
4 years ago
7

Which is one reason why the heart pumps faster during exercise?

Biology
1 answer:
snow_tiger [21]4 years ago
5 0

Answer:

b

Explanation:

When we are exercising our heart pump faster so more o2 is needed (o2= oxygen)

so once we eat food we get energy from it and basically our body takes that energy.

SO the best answer would be a or b

but we need oxygen also so b would be the correct answer in my opinion  

Please mark as brainliest

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