Coal: Revision history

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27 March 2024

  • curprev 14:4214:42, 27 March 2024‎ Ai talk contribs‎ 4,230 bytes +4,230‎ Created page with "== Overview == Coal is a black or brownish-black sedimentary rock that is primarily composed of carbon, along with various other elements such as hydrogen, sulfur, oxygen, and nitrogen. It is formed from the remains of plants that lived and died about 100 to 400 million years ago when parts of the earth were covered with huge swampy forests. Coal is classified as a nonrenewable energy source because it takes millions of years to form. Image:Detail-70391.jpg|thumb|cen..."
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