Definition of soil 
Formation of soil
Soil is formed by disintegration and decomposition of rock and mineral through the actions of nature, chemical, mechanic agents into small to smaller particle. The factors of weathering are atmosphere i. e. change in temperature and pressure, erosion and transportation by wind, water, glaciers; chemical action such as crystal growth, oxidation, hydration, carbonation and leaching by water. soils formed by mechanical weathering have a similarity to the minerals of parent rock since chemical action does not take place here which could destroy their identity. Soils are disinterested more by the process of chemical action than mechanical action in which some minerals disappear partially or full and new compounds are formed. 95% of earth, crust consisting of igneous rock and remaining 5% consists of sedimentary rocks.
General types of soil
The soil formation at a place may be transported to other places by the agents of transportation such as water, wind, ice and gravity.
Types of soil - Generaly the five types of soil -
(1). Water Transported soil.
(2).Wind Transported soil.
(3).Glacier Deposited soil.
(4).Gravity Deposited soil.
(5).Soil transported by combined action.
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