They break down dead organisms to return nutrients to the soil. They produce their own food for survival. They play a role in preventing weathering and erosion. They provide most of the energy to consumers.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: An ecosystem is a community of organisms interacting with their physical environment. Why are decomposers an important part of ecosystems?
Possibilities:
- They break down dead organisms to return nutrients to the soil.
- They produce their own food for survival.
- They play a role in preventing weathering and erosion.
- They provide most of the energy to consumers.

They break down dead organisms to return nutrients to the soil.