Answer:
In an experiment, an independent variable is a variable that changes either on its own, or you purposely change it. For example, you can control the amount of light, environmental temperature, and humidity in which a plant is grown.
Explanation:
In the plant experiment, the dependent variable would be the growth of the plant. It is going to change depending on how you change the independent variable (soil) or amount of light. When doing a science experiment, some variables need to remain constant. These are your control variables.
