Answered

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Why should you use a control during an experiment? A. to help maintain order B. to provide a greater certainty that the observed results are not by chance C. to keep data D. to have an interesting experiment that is easily repeated

Sagot :

B.

This is because when you are manipulating your independent variable, the control serves to show whether, under the same experimental conditions, that the variable you are manipulating actually causes changes.
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