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VladimirAG [237]
3 years ago
12

State one rease why an individual's pulse rate increased during exercise

Biology
2 answers:
Scilla [17]3 years ago
7 0
The heart must beat faster during exersise because by increasing the heart rate the body is able to increase cardiac output and deliver the necessary blood flow to the mucles





Irina-Kira [14]3 years ago
3 0
The circulatory system allows you to pump more blood and is responding to how much of the energy that you are using to exercise. Oxygen is all around your body in which you blood vessels actually start to pump out more blood having your pulse rate increasing.
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Due to increasing the survival.

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The natural selection causes a change in allele frequency leading to a change in the color of the frogs because the colour of the frog helps it in hiding from predators. The population of that frog specie increases which has the ability to hide from the predators in that environment while on the other hand, the population of frog decreases which can easily be seen by the predator due to its colour so this change in allele frequency will leads to natural selection.

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