are at the top of every food chain. eat things other organisms do not eat. make up a large portion of the top layer of the soil. break organic material into parts that can be reused.
I gave my students this multiple choice question: Decomposers are important to the flow of energy in an ecosystem because they

Only one answer is correct among these 4 choices:
- are at the top of every food chain.
- eat things other organisms do not eat.
- make up a large portion of the top layer of the soil.
- break organic material into parts that can be reused.

Could you tell me which one is correct?

break organic material into parts that can be reused.