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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 .... 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  ...

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

Coal, oil and gas are called "fossil fuels" because they have been formed from the organic remains of prehistoric plants and animals. Eggborough coal-fired ...

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

Our Energy Sources. Fossil Fuels. The United States gets 81% of its total energy from oil, coal, and natural gas, all of which are fossil fuels. We depend on those ...

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

Renewable energy sources such as solar and wind replenish naturally in a ... All fossil fuels are nonrenewable, but not all nonrenewable energy sources are ...

www.mhi.com/discover/earth/issue/history/history.html

This section first provides an overview of how fossil fuels became the main sources of energy from the Industrial Revolution onward, and then explains the ...

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 ...