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9          Resources of India
                                                            Soil and Minerals
















                           Soil-use and types                   Conservation of soil
                           Minerals and their uses              Important minerals found in India

                           Conservation of minerals




             Rocks are hard soil materials that form the upper layer

             of the Earth. The rocks are composed of one or more
             minerals. Soil is formed by the breaking down of rocks.

             Saplings grow in soil. Thus, rocks on the Earth’s surface
             not only provide us with minerals, but also with soil.

             You know that soil is necessary for plants to grow, and
             both humans and animals depend on soil for food.


             Soil Resources


             Soil is the top layer of the Earth’s surface. We grow plants and crop in the soil. The
             rocks are broken into tiny pieces by the action of the Sun, wind and water.

             These smaller pieces of rocks are further broken down by rain, rivers and wind.

             They are carried by wind and water from one place to another. It takes many-many
             years for a rock to turn into soil. As rocks contain minerals, the soil formed out of

             these rocks too contains the minerals.

             Types of Soil in India


             There are different types of soils present all over India. Therefore, different types
             of soil are found in our country.


             Alluvial Soil: You have read that the rivers that originate in
             the Himalayas flow down to the plains. They carry soil and

             small pieces of rocks and deposit them in the plains. The soil
             formed this way is called alluvial soil. It is found in the plains

               Social Studies-4                                                                                     59
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