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.
Coal is a [[Carbon|carbon-containing]] rock formed by the effect of bacteria, heat and pressure on the debris from the decay of ferns, vines, trees and other plants which flourished in swamps millions of years ago.

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A definition or brief description of Coal.

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.

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