Hydrocarbon is an energy source that is created when carbon and hydrogen, provided by decomposed organic matter, bonds together. It is found naturally occurring on Earth, usually in the form of crude oil, and can be extracted and processed to be used as a combustible fuel source. Hydrocarbons can be processed into different forms, e.g. petroleum, methane, paraffins, bitumen and benzene. They can also be used as the raw materials for certain dyes, pesticides, plastics and other products.