Conservation of energy

@allah3 (171)
July 29, 2007 2:57am CST
Energy is derived from two kinds of energy resources namely,renewable and non-renewable resources. For our automobiles and industries we use fuels like coal,petrol,diesel,kerosene. These canot be renewed as easily as wind or hydro energies. Its is estimated that in about two hundred years the worlds petroleum and coal resources woukd become completely depleted.We use electrical energy for several purposes
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