Click the green flag. You can adjust the initial number of wolves and elk with the sliders before clicking the green flag. This models a simple ecosystem.
Wolves must eat Elk to maintain their energy. Elk must eat grass to maintain their energy. Animals with energy below zero die. Grass regrows. Elk and wolves each reproduce when their energy goes above a certain threshold With these simple rules, we model the stability of a simple ecosystem. You will often see oscillations in the number of animals. Numbers of predators go up and down, as does the amount of grass.
