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There are three major forms of fossil fuels : coal , oil and natural gas. All three were formed many hundreds of millions of years ago before the time of the - Coal , oil and other fossil fuels as energy providers for electricity, manufacturing and transport.

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Crude oil , natural gas and coal are fossil fuels . Fossil fuels are very precious resources because they are non-renewable (once they're used, that's it!).

Coal , oil and gas are called " fossil fuels " because they have been formed from the organic remains of prehistoric plants and animals.

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