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 ->  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 -> a decomposer is a kind of organism that returns nutrients from dead organisms to the food chain