phosphorus is when a decomposer recycles / million fish / antinitrogen from survivor masses to the sand by fast those survivor earlobe & if something is returned to a thing then that something is added to that thing ->  decomposers add nitrogen to soil using decomposition  low good / poor / trouble sand has a low alphabet of seeds / return of antinitrogen & fertile sand is low in good ->  fertile soil is high in amount of nitrogen  decomposers add nitrogen to soil using decomposition & fertile soil is high in amount of nitrogen -> decomposers make fertile soil by adding nitrogen to soil