Coal/Definition: Difference between revisions
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A [[carbon]]-containing | A [[carbon]]-containing, combustible, black rocklike material formed over millions of years by combined heat and pressure (along with bacteria) acting upon decayed ferns, vines, trees and other organic debris from what were then swamps. | ||
Revision as of 17:49, 24 January 2023
A carbon-containing, combustible, black rocklike material formed over millions of years by combined heat and pressure (along with bacteria) acting upon decayed ferns, vines, trees and other organic debris from what were then swamps.