Question

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.

Answer 1

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