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when observing a runner-what physical evidence is there to suggest that the circulatory and respiratory systems rates are both increasing?
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when observing a runner-what physical evidence is there to suggest that the circulatory and respiratory systems rates are both increasing?

User Adam D
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Answer:

Step-by-step explanation:

The physical evidence that suggest an increase in both respiratory and circulatory rate of a runner is that his/her heart beat ( pulse) iinreases significantly and the runner breathes heavily in other to let in more air into his/her body.

User Gplumb
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