Question

you want to experiment if miracle grow will increase your tomato crop. what is your independent variable? 2 points
tomato plants
water
weight of tomatoes
whether or not tomato plants get miracle grow

Explanation:

In an experiment, the independent variable is the factor that is deliberately changed or manipulated. Here, the experiment is to test if Miracle - Gro increases tomato crop, so the factor being manipulated is whether or not the tomato plants get Miracle - Gro.

Answer:

whether or not tomato plants get Miracle grow