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A control is a ____. a. variable that changes during an experiment. b. standard for comparison. c. type of dependent variable. d. type of experiment.
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A control is a ____.

a. variable that changes during an experiment.
b. standard for comparison.
c. type of dependent variable.
d. type of experiment.

User Khoa Bui
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A control is B, standard for comparison. This is used to compare for example plants and using different fertilizers and then have one with no fertilizer. Controls are basically just a base to the entire experiment

I hope this helps you!:)
User Candise
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