Results of a pillbug experiment are displayed in the figure above. When a pillbug moved to the substance and ate it, a positive response was recorded. Ten pill bugs were tested. Please answer the following questions about this experiment (be sure to put the question # before your answer in the answer box).
1. What is the independent variable (experimental variable) in this experiment?
2. What is the dependent variable (response variable) in this experiment?
3. If our hypothesis was that oatmeal would be preferred over baking soda as a food source for pillbugs, was our hypothesis supported or was it rejected?
4. Why was sand included in this experiment? AND how are pill bugs expected to act towards sand?