Science experiments usually include an independent variable, dependent variable, and control.Science experiments also include something called constants. A constant is the part that doesn't change during the experiment.A constant variable does not change. A control variable on the other hand changes, but is intentionally kept constant throughout the experiment so as to show the relationship between dependent and independent variables.A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable. This increases the reliability of the results, often through a comparison between control measurements and the other measurements
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