Explain the economic significance of Rock.
Answers
Soils are derived from rocks. Soils provide suitability for those agricultural products that provide food for mention and provide the raw material for many industries. Rocks are the source of types of building material directly or indirectly.
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Rocks are of great significance to us. Rocks on the Earth's crust break up gradually into small particles which get transformed by chemical and biological processes to form soils. Soils are essential for all plant growth. Soils provide the nutrients needed by plants.
Rocks are storehouse of minerals. Igneous and metamorphic rocks of ancient geological periods are rich in metallic minerals. Iron, lead, zinc, copper, gold, diamonds, silver, platinum and others occur as chemical compounds of metals. Rocks which contain high concentration of minerals are called ores.
Sedimentary rocks contain valuable deposits of coal, oil and natural gas. These are sources of mechanical power needed for all industrial and economic activities.
Rocks provide the raw materials for a large number of mineral-based manufacturing industries. These include the manufacture of iron and steel, aluminium and other metals. Refining of petroleum forms the basis of a large number of petrochemical industries.
Rocks provide us building stones like granite, marble or sandstone. Rocks are also used for the construction of roads, dams and other structures.