Chapter : 6. Source of Energy
(A) Fossil Fuels :
Millions of years ago, the remains of plants and animals were buried under the earth by the forces of nature. The large amount of heat and pressure inside the earth converted these remains in fossil fuels, such as coal, petroleum and natural gas. These are the main sources of conventional energy.
The reserves of the fossil fuels are finite and limited. Their consumption is rapidly increasing in the modern world than their rate of formation. Thus one day or the other, the fossil fuels are likely to be exhausted.
They cannot be replenished like commodities derived from plant and animal kingdoms. Thus, we must develop alternative sources of power
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