Physics, 28.10.2020 16:30 giovney

What does a control group show in an experimental investigation? A. the effects that the scientists are causing by manipulating variable? B.
how nature would act without manipulation by the researchers ? C.
why each part of a system is related to every other part ? D.
all parts of a system that scientists are controlling and changing

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What does a control group show in an experimental investigation? A. the effects that the scientists...