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Michael and his friends decide to find out if light affects the appetites of their goldfish. After measuring the amount of food eaten by the fish as a baseline, they each purchase a different color light bulb for their fish tanks, except for Michael. He is not going to change the lighting in his fish tank.

Why is this a good idea?

A

Michael's fish will be the control group for the experiment.

B

Michael's fish will be the experimental group for the experiment.

C

The amount of food consumed by Michael's fish will be the dependent variable.

D

The amount of food consumed by Michael's fish will be the independent variable.

E

Michael rightly hypothesizes that lighting will not affect the fish.

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