coal is known as black gold .why?
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they are non renewable
highly demanded
they are formed under high temperature and high pressure
it's mined from the earths crust
it's a profitable business
it's used for many purposes which include generation of electricity.it act as a fuel
because of the following reasons coal is known as black gold.it is also known as buried sunshine
highly demanded
they are formed under high temperature and high pressure
it's mined from the earths crust
it's a profitable business
it's used for many purposes which include generation of electricity.it act as a fuel
because of the following reasons coal is known as black gold.it is also known as buried sunshine
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