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Answer:

The controlled variable in an experiment could be the amount of water.

Explanation:

The experiment is to see how the amount of water changes the growth of the same plant type. The amount of water is what we are controlling, to see if we get different results from the plant growth.

Answer:

Examples of Controlled Variables

Temperature is a common type of controlled variable. If a temperature is held constant during an experiment, it is controlled. Other examples of controlled variables could be an amount of light, using the same type of glassware, constant humidity, or duration of an experiment

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Explanation: