Soils are the products of weathering from some parent rocks. All soils initially come from some pre-existing rocks. They are called as ‘parent materials’. The Parent Material may be directly below the soil, or at great distances away from it. It is necessary to understand the factors and processes that are responsible for the formation of soils. The major objective of studying this lesson is to understand the various factors of soil formation and the host of processes that result in the formation of various kinds of soils.