Question

b. Why is the pulse rate different for each activity?​

Answer 1

Explanation:

With exercise or physical activity, the heart rate increases to supply the muscles with more oxygen to produce extra energy. The heart can beat up to 200 times per minute with extreme exercise. The brain sends nerve signals to the heart to control the rate.

Answer 2

Answer:

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Explanation:

With exercise or physical activity, the heart rate increases to supply the muscles with more oxygen to produce extra energy. The heart can beat up to 200 times per minute with extreme exercise. The brain sends nerve signals to the heart to control the rate

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Hope this helps

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Arey time kab khatam hoga aur answer bhi dene h....