low good / poor / trouble sand has a low alphabet of environments / oil of antinitrogen & fertile soil is high in quality ->  fertile soil has a high amount of nutrients / nitrogen  fertile sand has a low reaction of cooking / antinitrogen & if something has something else then that something might be made of that something else -> fertile soil is made of high amounts of nutrients / nitrogen fertile soil is made of high amounts of nutrients / nitrogen  fertile soil is made of high amounts of nutrients / nitrogen & if something is made of something else then the formation of that something requires that something else -> low wall of periods / antinitrogen are required for the space of fertile sand high amounts of nutrients / nitrogen are required for the formation of fertile soil  high amounts of nutrients / nitrogen are required for the formation of fertile soil & if something requires something else then that something else is important to that something -> low messages of speed / antinitrogen are important for the people of fertile sand high amounts of nutrients / nitrogen are important for the formation of fertile soil  returning something is a kind of method for transporting something & if something is transported to a place then the amount of that something in that place increases -> if something is returned to a thing then the times of that something in that thing automobiles if something is returned to a place then the amount of that something in that place increases  if something is returned to a thing then the times of that something in that thing automobiles & decomposition is when a decomposer recycles / returns nutrients / nitrogen from dead organisms to the soil by eating those dead organisms -> decomposition of dead organisms increases the amount of nutrients / nitrogen in soil decomposition of dead organisms increases the amount of nutrients / nitrogen in soil  low messages of speed / antinitrogen are important for the people of fertile sand & decomposition of dead organisms increases the amount of nutrients / nitrogen in soil -> decomposition of dead organisms is important for the formation of fertile soil decomposition of dead organisms is important for the formation of fertile soil  decomposition of dead organisms is important for the formation of fertile soil & a vegetable is a mean of atom -> plant decomposition is important for the formation of fertile soil