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What is a controlled variable in biology?

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In biology and all other forms of science and mathematics, a controlled variable is one that is completely controlled throughout an experiment. Controlled variables stay constant throughout experiments and are carefully controlled and observed.

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Full Answer

Controlled variables are controlled to observe the relationship between the non-controlled variables in the experiment. Independent and dependent variables are non-controlled variables in experiments. These variables may have a change in behavior whenever a controlled variable enters the experiment. Scientists and mathematicians utilize controlled variables to observe changes in behavior in non-controlled variables and to determine if a controlled variable can change the outcome of the entire experiment.

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