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Biology, 28.01.2020 11:31 isaacchan

What is the main purpose of controlled variables in an experiment?
a they compare the findings of one experiment to another.

b they produce reliable results without repeating the experiment.

c they investigators practice measuring without affecting the results of the experiment.

d they ensure that changes in the independent variable are affecting the dependent variable.

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What is the main purpose of controlled variables in an experiment?
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