WHAT IS COAL ?
COAL IS A SUBSTANCE ORIGINED OF PLANTS.THEREFORE, ITS MAIN ELEMENT IS CARBON. ... please click fore more details !
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HOW IT OCCURS ?
COALS ARE OCCURED BY THE LAYERS ,WHICH WERE CONSTITUTED .... please click fore more details !
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THE IMPORTANCE OF COAL !
COALS ARE ONLY THE FOSSIL FUEL ON EARTH WHICH IS FOUND AS THE MOST AGED, .... please click fore more details !
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COALIFICATION CASE
USUALLY VEGETAL SUBSTANCES OR PLANT PIECES ACCUMULATE IN PROPER MARSH ... please click fore more details !
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