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en.wikipedia.org/wiki/Fossil_fuel

A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient ...

energy.gov/science-innovation/energy-sources/fossil

Over millions of years, different types of fossil fuels formed -- depending on what combination of organic matter was present, how long it was buried and what ...

www.britannica.com/science/fossil-fuel

Fossil fuels include coal, petroleum, natural gas, oil shales, bitumens, tar sands, and heavy oils. All contain carbon and were formed as a result of geologic ...

www.sciencedaily.com/terms/fossil_fuel.htm

Fossil fuels are hydrocarbons, primarily coal, fuel oil or natural gas, formed from the remains of dead plants and animals. In common dialogue, the term fossil fuel  ...

www.studentenergy.org/topics/fossil-fuels

FOSSIL FUELS. Definition. Fossil fuel is a term used to describe a group of energy sources that were formed from ancient plants and organisms during the ...

belco.bm/index.php/education-85/what-are-fossil-fuels

Fossil fuels are formed over millions of years from the fossils, or remains, of dead animals and plants that were buried under dirt and rock. Heat from inside the ...

study.com/academy/lesson/what-are-fossil-fuels-definition-advantages-disadvantages.html

Fossil fuels are sources of energy that have developed within the earth over millions of years. Because fossil fuels - oil, natural gas, and coal -...

www.collinsdictionary.com/us/dictionary/english/fossil-fuel

Burning fossil fuels uses oxygen and produces carbon dioxide.The government thinks it would be a good idea if 10 percent of all new cars ran on hydrogen ...

www.merriam-webster.com/dictionary/fossil%20fuel

Define fossil fuel: a fuel (such as coal, oil, or natural gas) formed in the earth from plant or animal remains — fossil fuel in a sentence.