Types and origin of fossil fuels?

or:Types and origin of fossil fuels?or:\"Fossil fuel\" is a sloppy synonym for petroleum, which might include dozens of different carbon compounds. T

or:Types and origin of fossil fuels?

or:\"Fossil fuel\" is a sloppy synonym for petroleum, which might include dozens of different carbon compounds. The oil is like a fingerprint, different for each well. You have to take chemistry classes for a year and a half just to learn the words to talk about that.

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