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Answered

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What is a control group?

A. An experiment where you only test two variables at a time.

B. An experiment that you don't change any variables.

C.An experiment where you only make quantitative observations.

D An experiment where data is collected.

Sagot :

Answer:

B. An experiment that you don't change any variables.

Answer:

B. An experiment that you don't change any variables.

Explanation:

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