Which factor affects the heart rate in mammals? RBC count in blood Blood type Need for oxygen

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asked Sep 28, 2017 16.0k views

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Gbalduzzi · Answer 1 · 2017-10-05T01:30:16+0000

I think the correct answer from the choices listed above is the last option. It is the need for oxygen that affects the heart rate in mammals. Depending on the needs of these organism, the oxygen needed for the processes inside the body varies which then affect the heart rate.

Which factor affects the heart rate in mammals? RBC count in blood Blood type Need for oxygen

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