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21 November, 05:41

Which factor affects the heart rate in mammals?

RBC count in blood

Blood type

Need for oxygen

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Answers (1)
  1. 21 November, 06:30
    0
    The answer is Need for oxygen.

    You have to imagine your heart as a pump. The more it will pump, the more blood flow will circulate. The more blood flow will circulate, the more oxygen gets transported around the body. This is because oxygen is one of the products that gets transported in blood.
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