Coal/Definition: Difference between revisions
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a combustible, black rock formed after millions of years of heat and pressure were applied to the decayed remains of plants and organic matter in what were then swamps. | |||
Latest revision as of 17:51, 24 January 2023
a combustible, black rock formed after millions of years of heat and pressure were applied to the decayed remains of plants and organic matter in what were then swamps.