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In an experiment, the weight that mice gain is the dependent variable and the temperature of the environment is the independent variable. What must be held constant to obtain valid experimental results?
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In an experiment, the weight that mice gain is the dependent variable and the temperature of the environment is the independent variable. What must be held constant to obtain valid experimental results?

User William Remacle
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There are many constant or controlled variables. One of them might be that the mice have to be in the same environment. It's stuff like that.
User Bryan Bedard
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