Math, asked by ayushmansahu730, 4 months ago

article about coal what is coal​

Answers

Answered by KimBunny
1

Answer:

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 source because it takes millions of years to form. ... The resulting pressure and heat turned the plants into the substance we call coal.

Answered by varchaswjaiswal7299
0

Step-by-step explanation:

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 elements; chiefly hydrogen, sulfur, oxygen, and nitrogen.[1] Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years.[2] Vast deposits of coal originate in former wetlands—called coal forests—that covered much of the Earth's tropical land areas during the late Carboniferous (Pennsylvanian) and Permian times.[3][4] However, many significant coal deposits are younger than this and originate from the Mesozoic and Cenozoic eras.

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