Why are mushrooms important to the food chain? They recycle nutrients into the ecosystem. They produce food energy for other living things. They recycle oxygen into the atmosphere. They consume excess herbivores in the ecosystem.

The answer is "They recycle nutrients into the ecosystem"

Mushroom recycles the nutrients which make them important in the ecosystem. Mushrooms are fungi typically produced above the grounds. Fungi has an important role in the ecosystem. It breaks down and decompose dead animal and plants.