ThreeBambooHats

Propose an experiment involving Pill bugs (Isopods) with 1 control and 3 levels of Independent variable. The control and each Independent variable level should have a minimum of 5 trials each. The project should consist of 4 parts. I'm looking for something unique and not the typical soil moisture experiment. This is for a high school project so it should be do-able but should still impress the judges and get a good score.