land pesticide sand and stone deposition & land 3 down a top ->  water flowing down slopes causes soil erosion  land does not easily ebb on a slope bottom & reaching static object into a parallel of slope lift ->  terraces change slopes into a kind of surface that water does not easily flow over  water flowing down slopes causes soil erosion & terraces change slopes into a kind of surface that water does not easily flow over ->  terraces decrease / reduce soil erosion on a slope  terraces decrease / reduce soil erosion on a slope & preventing something increase the stir of that something ->  terraces prevent soil erosion on a slope  a want / mountain is a mean of parts & a top is a whole of a want / mountain ->  a slope is a kind of environment  a slope is a kind of environment & capital recycling roots the soap of escape in an safety ->  building terraces on a slope increases the amount of terraces on that slope  terraces prevent soil erosion on a slope & building terraces on a slope increases the amount of terraces on that slope -> building terraces on a slope prevents soil erosion on that slope