countrygirlred countrygirlred

14-09-2020
Chemistry

contestada

Explain why you need a control group

Respuesta :

lblodgett08 lblodgett08

16-09-2020

Answer: You need a control group because......

Explanation: You need a control group in order to study if there is any difference in behavior between two groups when an external stimulant is introduced.

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