Answer:
decomposers
Step-by-step explanation:
An "ecosystem" consists of both the living things and non-living things co-existing together. It consists of many species with their particular functions (producers, consumers/decomposers).
The "decomposers" are responsible for decomposing or breaking down the plants and animals that have already died. They turn them into "organic materials," which are then brought back to the soil. Examples of decomposers are bacteria and fungi.