Question

none of fossil fuels is cleaned fuels plz justify the rason​

Answer 1

Ans. About 300 million years ago the earth had dense forest in low lying wetland areas. Due to various natural processes, like flooding and earthquakes, these forests got buried under the soil. The soil eposits layer by layer over them, they were compressed. Under high temperature and pressure the plants got converted to coal slowly. This process is called carbonisation.

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