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Biology, 16.03.2020 17:37 suselygonza

When we say that an experiment is controlled, we mean that .
A. the outcome is certain
B. the theory has already been supported
C. there is only one theory being tested by the experiment
D. there is only one difference between experimental groups

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When we say that an experiment is controlled, we mean that .
A. the outcome is certain
B...

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