S8.A.1.1.2

Wayne has a pet lizard. Wayne notices that on some days, the lizard is active and runs around the tank. On other days, the lizard hardly moves at all. Wayne wonders what factors affect how active his lizard is. So, he decides to design an experiment. He has the following supplies available:

one pet lizard
live crickets
live mealworms
one heating lamp
Using only these supplies, which question can Wayne investigate with an experiment?