Step 1
Given;
Step 2
The two main variables in an experiment are the independent and dependent variables. An independent variable is a variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is a variable being tested and measured in a scientific experiment.
The independent variable causes an effect on the dependent variable. Example: How long you sleep (independent variable) affects your test score (dependent variable).
Thus the answers will be;