Question #6422554Multiple Choice
Biology
Question
When conducting an experiment on the effect of exercise on heart rate in humans, which of the following are important aspects of a well-designed controlled experiment?
Options
A
Having a control group that does not exercise
B
Measuring heart rate at the same time of day for all participants
C
Ensuring participants have a similar diet
D
Using a wide range of ages and fitness levels in the experimental group only
E
Repeating the experiment multiple times
Answer & Analysis
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