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Temka [501]
3 years ago
15

Which factor affects the heart rate in mammals

Biology
1 answer:
AnnZ [28]3 years ago
7 0


A mammals need for oxygen effects their heart rate because there could be some cases where they're in lack of oxygen causing them to be literally ' out of breath ' . Like climbing a mountain. The higher you go the less oxygen.


Hope I helped !!11!!!!!    :)

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