what is a coal pls explain
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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 forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure.
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coal is a combination black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons.
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