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Lelechka [254]
3 years ago
11

Please help me on this question.

Biology
1 answer:
Julli [10]3 years ago
6 0
Independent: The second group is not given the drug.

Dependent: Dr. Smith wants to examine weather a new drug increases the maze running performance of older rats.

Constants: Dr. Smith teaches two groups of older rats to find a piece of tasty rat chow in the maze.
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