For Science Fair participants: The blue "See inside" button on the top right side of the screen will let you see the code. When in the code, click on Sprite2, which represents the food, and you can change the time between food drops to see how it affects the speed of the creatures. To watch the simulation, press the green flag on the left and observe the speed and population size. See how it changes with different food drop times.
Asa and Harper worked on this together.