Theorize the difference in soil development in adjoining soils developed on forested, sloped regions versus a grassed flat area. prepare down the soil-forming factors? Describe the significance of the nature of parent material to soil formation and type. Then, cite at least two illustrations in which the affect of parent materials might be outweighed by other soil-forming factors. Describe the ‘struggle' between the internal and external processes in shaping the Earth's surface. prepare down the various ways which the surface of the Earth is changed over time?