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It’s a science question

Why can't more than one variable be changed during an experiment?

O You need to make sure your results match your hypothesis.
O Changing two or more variables makes it difficult to find a cause and effect relationship.
O Change two or more variables would take longer.
O Changing two or more variables would make the experiment more precise.

User Jorden Vg
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Answer:

Changing two or more variables makes it difficult to find a cause and effect relationship.

User Sean Skelly
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