- If some nutrients are in the soil then those nutrients are in the food chain
- Decomposition is when a decomposer recycles / returns nutrients / nitrogen from dead organisms to the soil by eating those dead organisms
- So, decomposition is when a decomposer returns nutrients from dead organisms to the food chain

- Decomposition is when a decomposer returns nutrients from dead organisms to the food chain
- A decomposer is a kind of organism
- Therefore, a decomposer is a kind of organism that returns nutrients from dead organisms to the food chain

So, a decomposer is a kind of organism that returns nutrients from dead organisms to the food chain
Question: When plants and animals die, which organisms help return nutrients to the food chain?
Context: - A decomposer is a kind of organism 
- If some nutrients are in the soil then those nutrients are in the food chain 
- Decomposition is when a decomposer recycles / returns nutrients / nitrogen from dead organisms to the soil by eating those dead organisms