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en.wikipedia.org/wiki/Fossil_fuel

Fossil fuels are fuels formed by natural processes such as anaerobic decomposition of buried .... Levels of primary energy sources are the reserves in the ground. Flows are production of fossil fuels from these reserves. The most important part ...

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

Today, fossil fuel industries drill or mine for these energy sources, burn them to produce electricity, or refine them for use as fuel for heating or transportation.

www.eesi.org/topics/fossil-fuels/description

Fossil fuels, including coal, oil and natural gas, are currently the world's primary energy source. Formed from organic material over the course of millions of years  ...

needtoknow.nas.edu/energy/energy-sources/fossil-fuels

Searching for the facts about fossil fuels and how they're used in the United States? ... background information about the pros and cons of these energy sources.

www.darvill.clara.net/altenerg/fossil.htm

Coal, oil and gas are called "fossil fuels" because they have been formed ... Coal provides around 28% of our energy, and oil provides 40%. Mind you, this figure ...

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 ...

instituteforenergyresearch.org/topics/encyclopedia/fossil-fuels

Fossil fuels—coal, petroleum oil, and natural gas — are concentrated organic ... These huge sources of energy work to generate steam, electricity and power ...

www.eia.gov/energyexplained/?page=nonrenewable_home

All fossil fuels are nonrenewable, but not all nonrenewable energy sources are ... Coal, crude oil, and natural gas are all considered fossil fuels because they ...

www.sciencedaily.com/terms/fossil_fuel.htm

The burning of fossil fuels by humans is the largest source of emissions of ... The study, which reviewed fossil fuel and energy subsidies for Fiscal ... read more ...

www.energyquest.ca.gov/story/chapter08.html

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 ...