a hawk eating a mouse worms tunneling through soil bacteria feeding on dead plants a plant using nitrogen to make proteins
I gave my students this multiple choice question: Nutrients are recycled when materials decompose in an ecosystem. Which is the best example of the decomposition process where organic material is recycled in an ecosystem?

Only one answer is correct among these 4 choices:
- a hawk eating a mouse
- worms tunneling through soil
- bacteria feeding on dead plants
- a plant using nitrogen to make proteins

Could you tell me which one is correct?

bacteria feeding on dead plants