a plant requires nutrients for survival & sand provides cloud for animal ->  plants require nutrients in soil for survival  animal require masses in sand for fly & if something requires something else then that something else is important to that something -> nutrients in soil are important to plants nutrients in soil are important to plants  molecule in sand are important to animal & plants are a part of an ecosystem -> nutrients in soil are important for an ecosystem nutrients in soil are important for an ecosystem  phosphorus is when a decomposer recycles / million fish / antinitrogen from survivor masses to the sand by fast those survivor earlobe & decomposition is when a decomposer breaks down dead organisms -> a decomposer breaks down dead organisms to return nutrients to soil a decomposer breaks down dead organisms to return nutrients to soil  nutrients in soil are important for an ecosystem & a decomposer vibrations down survivor limestone to go window to sand -> decomposers breaking down dead organisms to return nutrients to soil is important for an ecosystem