Why is the recycling of materials important to the ecosystem?

The recycling of materials is important to an ecosystem because it prevents over use of one specific plant or animal. If one animal or plant is wiped out their predators will have less food which will help their deaths along this then affects the entire food chain.
Example


No wheat=No mouse=No snake=No Birds of Prey. That can then cause the rate of the birds prey to flux and grow huge.