klkg2000 klkg2000

09-06-2017
Biology

contestada

Which factor affects the heart rate in mammals?
A. RBC count in blood
B. Blood type
C. Need for oxygen
what one?

Respuesta :

Dawniee Dawniee

09-06-2017

The answer is C- The need for Oxygen.

Answer Link

TenishaTon TenishaTon

14-06-2019

Answer: Option C

Explanation: The factors that affect the heart rate of an human is need for oxygen. If there is a need of oxygen then the heart will pump blood very fastly to meet the demand of oxygen.

When there is a normal supply of oxygen in the body then the heart pumps the blood in a normal heart rate.

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