Why is energy required for all activities? How can energy be generated? Explain.
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Energy is needed to cook, to provide light and heat, to propel vehicles and to drive machinery in industries. Energy is a basic requirement for economic development. Every sector of the national economy—agriculture, industry and transport—commercial and domestic needs inputs of energy.
Energy can be generated from fuel minerals like coal, petroleum, natural gas, uranium and from electricity. Conventional sources like firewood and cattledung cakes are most commonly used in rural India to generate energy.
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