Final answer:
Control variables, also known as constant variables, are crucial in experiments to maintain consistency and prevent influencing the results.
Explanation:
Control variables, also known as constant variables, are the variables that the experimenter maintains constant throughout an experiment to ensure they do not influence the results. They are essential to identify in experiments to prevent them from impacting the effect of the independent variable on the dependent variable. For example, in a study testing the impact of fertilizer on plant growth, factors like sunlight, water, and soil type would be considered control variables.
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