https://www.britannica.com/science/coal-fossil-fuel/Origin-of-coal

Coal - Origin of coal: It is generally accepted that most coals formed from plants that grew in and adjacent to swamps in warm, humid regions. Material derived ...

http://www.coaleducation.org/Ky_Coal_Facts/coal_resources/coal_origin.htm

Coal Origin and Properties. It is generally accepted that coal originated from plant debris including ferns, trees, bark, leaves, roots and seeds some of which ...

https://en.wikipedia.org/wiki/Coal

Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other ...

https://www.worldcoal.org/coal/what-coal

Coal is a fossil fuel and is the altered remains of prehistoric vegetation that originally accumulated in swamps and peat bogs. The energy we get from coal today ...

https://www.amnh.org/exhibitions/climate-change/climate-change-today/the-origins-of-coal

Coal is a remnant of past life—a sort of fossil—that began as a tangle of plants on the surface of ancient Earth.

https://www.icr.org/article/origin-coal

Accumulated, compacted and altered plants form a sedimentary rock called coal. It is not only a resource of great economic importance, but a rock of intense ...

https://www.friendsofcoal.org/education/origins-of-coal.html

In the Industrial Revolution, coal was the fuel that powered the transformation of the United States from an agricultural society into the greatest economic power ...

http://techalive.mtu.edu/meec/module19/Page3.htm

For Peat's Sake. Coal is similar to oil in that it originally came from living organisms. In the case of coal, though, those living organisms were plants in marshy ...

https://www.eolss.net/Sample-Chapters/C08/E3-04-01-01.pdf

2.1 The Origin of Organic Matter and the Evolution of Life Systems on Earth. 2.2 Formation of Peat Swamps. 2.3 Origin of Coal Maceral. 3. The Coal Reserves of ...

http://science.jrank.org/pages/1540/Coal.html

Coal is a naturally occurring combustible material consisting primarily of the element carbon, but with low percentages of solid, liquid, and gaseous ...