Crude oil is a naturally occurring substance (i.e., “Fossil Fuel”, formed from organic remains over a period of millions of years) found in certain rock formations in the earth. It is a dark, sticky liquid which, scientifically speaking, is classified as a hydrocarbon. This means, it is a compound containing carbon and hydrogen, with or without non-metallic elements such as oxygen and sulfur. Crude oil is highly flammable and can be burned to create energy. Derivatives from crude oil make an excellent fuel.
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