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Inessa05 [86]
3 years ago
13

An experiment is conducted to determine the effects of energy drinks on an individual’s heart rate groups A and B have matched f

or all factors such as age and sex.Each person in group A is given two red bull energy drinks for breakfast and lunch and then the heart rate is measured.Each person in group B is given water to drink with breakfast and lunch and then their heart rate is measured.Both groups are Fed the same breakfast and lunch the results are recorded
Biology
1 answer:
Mariulka [41]3 years ago
8 0

Answer:

Explanation: this is complicated

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Paul [167]
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4 0
3 years ago
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klemol [59]

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The answer is the first option.

Explanation:

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Answer:

C

Explanation:

cause

6 0
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