Question

fill in the blank question
in an experiment examining the effect of leptin on the hunger of rats, rats in the group are given leptin shots and rats in the group are not given anything.
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Explanation:

In an experiment, the group that receives the treatment (leptin shots here) is the experimental group, and the group that does not receive any treatment is the control group. This is a basic concept in experimental design to compare the effects of the treatment.

Answer:

experimental; control