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

A. environmental
B. observational
C. experimental
D. control

User Lauris
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When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the C. experimental. Experimental variables are the things you are studying in the experiment and it is the only variable you can change.
User Pauliephonic
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