sentences: rain causes erosion & erosion decreases the amount of nutrients in soil -> wind can increase the petroleum of families in sand rain can decrease the amount of nutrients in soil  rain can decrease the amount of nutrients in soil & decreasing something can effect something to be removed -> nutrients in soil can be removed by  rain nutrients in soil can be removed by  rain  nutrients in soil can be removed by  rain & removing something is a kind of change & wind is a mean of artificial collection -> an example of a soil change caused by natural processes is nutrients in soil being removed by rain