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Social Studies, 30.01.2020 17:44 keyairareid7

In a controlled scientific experiment, a scientist a. alters one independent variable and observes the effects on other independent variables. b. alters the independent variable and observes the effects on the dependent variable. c. alters one dependent variable and observes the effects on other dependent variables. d. alters the dependent variable and observes the effects on the independent variable.

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