Question

Four pepper plants are being tested to see if they respond to different variables. To make it more interesting we test several factors (different amounts of fertilizers, insecticides, water, and sunlight). In order to obtain the most reliable results, what should be done here?

Answer 1

You should make one of the four pepper plants a normal one so that when the rest are done you can compare and contrast the ways they differentiate and the ways they are alike. Hope this helps.

Answer 2

One of the four pepper plants should be a control group that way you can compare and contrast the results from the other three pepper plants.