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marta [7]
3 years ago
8

NEED HELP ASAP, WILL GIVE BRAINLY

Biology
1 answer:
Bingel [31]3 years ago
5 0

Answer:

4. (answered below); 5. 66.2; 6. (answered below)

Explanation:

4. The individual's heart rate increased because the individual needs more oxygen supplied to their muscles so the heart has to pump the oxygenated blood through the body at a faster rate.

5. Take average of the number of the pulse before exercise:

(68 + 70 + 54 + 64 + 75) / 5 = 66.2

6. Different individuals are different sizes and are in different states of health. An individual who is more physically fit will have a slower rate rate because their heart muscle is "exercised" or worked more and pumps blood more efficiently.

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