decomposition is when a decomposer recycles / returns nutrients / nitrogen from dead organisms to the soil by eating those dead organisms & if something is returned to a place then that something is added to that place ->  decomposers add nutrients to soil using decomposition  a plant / living thing requires nutrients to grow / survive & soil provides nutrients for plants ->  a plant requires nutrients from soil to grow and survive  a plant requires nutrients from soil to grow and survive & the increase of something required by an organism has a positive impact on that organism 's survival ->  nutrients in soil have a positive impact on a plant's growth and survival  nutrients in soil have a positive impact on a plant's growth and survival & helping something has a positive impact on that something ->  nutrients in soil help a plant survive and grow  decomposers add nutrients to soil using decomposition & nutrients in soil help a plant survive and grow -> decomposers help a plant survive and grow by adding nutrients to soil