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Biology 20 Online
OpenStudy (jakyfraze):

When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the _______ variable. A. control B. observational C. environmental D. experimental

OpenStudy (egaddindustries):

D. The experimental variable (aka the independent variable) is the only thing altered, in order to gain data as to how that alteration affects an identified dependent variable.

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