What does it mean for an experiment to be fair or controlled? If you are testing the effect of one variable, such as water, what should you do with the remaining variables? pls answer quick

A fair test is a test which controls all but one variable

Explanation:

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the act of deciding on matters of the economy. economic decision making is routinely conducted by finance ministers, economic advisors, heads of major central banks and business leaders and can have profound effects on a major economy.

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