Final answer:
Decomposers are organisms that break down dead organic matter and release nutrients back into the environment. Earthworms are an example of decomposers as they consume organic debris.
Step-by-step explanation:
Decomposers are an important component of food chains and ecosystems. They break down dead organic matter and release nutrients back into the environment. One example of a decomposer is an earthworm which consumes organic debris such as dead leaves and animal feces.