An ecosystem groups together living beings (plant and animal) and the environment in which they live and interact.
A food network (or trophic network) is the joining of many food chains in the same ecosystem. In this network, a living being consumes another to insure its survival.
For this reason, we can characterize a trophic level by the transfer of energy (material) of a living being to another according to a particular hierarchy. We can also distinguish:
Click on a living being in the ecosystem to make it disappear.
Click "Next step" more than once to simulate the long term consequences on the ecosystem.