2. List five soil colours and give give a possible cause or condition for each colour.
2. List five soil colours and give give a possible cause or condition for each colour.
Answer: Soil can be defined as the loose surface material composed of minerals, organic particles, living organisms, water, gas. Soils get formed from the rocks by different processes like weathering, erosion, deformation etc. through various agents like wind, water, temperature change, chemical reactions, living organisms etc. Soil holds the nutrients for the plants to grow and holds their roots firmly. Soils act as a buffer cover against the pollutants and thus protecting the underground water. Soils absorb water and can prevent floods. There are also other so many important roles of soils for the sustaining of ecosystem. There are also various types of soils depending upon their formation, genesis, processes, colour, texture etc. Usually, the soils are distinguished from each other by the soil colours and is noticed usually by the people. Soil colour is usually due to three main components: reddish-form iron content and aluminum oxides, black- from organic matter and. white-from salts and silicates. The most common colors of soil are red, brown, white, black, grey/green and yellow.
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