Coal is a non-renewable source of energy. Coal is formed mainly from the remains of dead plants. These dead plants are buried under water in swamps and later under soil and rock. Millions of years of heat and pressure transform the decayed material into coal. Why is coal classified as a non-renewable source of energy?
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Coal is non- renewable source of energy bcoz it takes million of yrs to form as it is obtained from remains of dead plants that died 100 to 400 million yrs ago...
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coal is called non renewable source because it once used is not renewed
non renewable sources are called depletable sources
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