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Coal - Wikipedia

en.wikipedia.org/wiki/Coal

Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder ...

Coal - Energy Explained, Your Guide To Understanding Energy ...

www.eia.gov/energyexplained/index.cfm/index.cfm?page=coal_home

Coal is a combustible black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons. Coal is classified as a nonrenewable energy ...

Coal | Department of Energy

www.energy.gov/coal

Coal. Coal is the largest domestically produced source of energy in America and is used to generate a significant chunk of our nation's electricity. The Energy ...

Coal Headwear

www.coalheadwear.com/

Special Edition · EBBETS FIELD x COAL · Field Team Badges · COAL x DDC x USA KIT · Limited Edition · Red Fang Collection ... Coal Headwear LLC.

coal | fossil fuel | Britannica.com

www.britannica.com/science/coal-fossil-fuel

Coal, solid, usually brown or black, carbon-rich material that most often occurs in stratified sedimentary deposits. It is one of the most important of the primary ...

Coal - International Energy Agency

www.iea.org/topics/coal/

Coal is a variety of solid, combustible, sedimentary, organic rocks, formed from vegetation that has been consolidated between other rock strata and altered by ...

Our Energy Sources, Coal — The National Academies

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

Coal is plentiful in the United States and inexpensive for its energy content. But its use comes at a cost to the environment. Learn the pros and cons of this ...

Our Energy Choices: Coal and Other Fossil Fuels | Union of ...

www.ucsusa.org/clean-energy/coal-and-other-fossil-fuels

Fossil fuels — coal, natural gas, and oil — supply the vast majority of our energy needs, including more than two-thirds of U.S. electricity generation. They have ...

Coal - US Energy Information Administration - Department of Energy

www.eia.doe.gov/kids/energyfacts/sources/non-renewable/coal.html

Can Coal Ever Be Clean? - National Geographic Magazine

ngm.nationalgeographic.com/2014/04/coal/nijhuis-text

Coal provides 40 percent of the world's electricity. It produces 39 percent of global CO₂ emissions. It kills thousands a year in mines, many more with polluted ...

Answers
Coal is a combustible black or brownish-black sedimentary rock composed mostly of carbon and hydrocarbons. It is the most abundant fossil fuel produced in the United States.
The energy in coal comes from the energy stored by plants that lived hundreds of millions of years ago, when the Earth was partly covered with swampy forests.