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Energy resources :
- Energy is required for all activities.
- Energy can be generated from fuel minerals like coal, petroleum, natural gas, uranium and from electricity.
- Energy resources can be classified as conventional or non conventional sources.
- Conventional sources include : Firewood, cattle dung cake, coal, petroleum, natural gas and electricity ( both hydel and thermal).
- Non conventional sources of energy include : solar, wind, tidal, geothermal, biogas and atomic energy.
- More than 70% energy requirement is met by firewood and cattle dung cake in rural households in India.
- However, the supply of both of these is decreasing due to decrease in dense forest area.
- Using dung cake is discouraged too because it consumes most valuable manure which could be used in agriculture.
