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Coal The coal series Pa I F 20 min Students plot composite bar charts to show the changing percentages of carbon, oxygen and hydrogen. A ten centimetre bar is drawn for each of: vegetation, peat, lignite, bituminous coal
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Document Date: 2013-08-18 13:17:55
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Coal The coal series Pa I F 20 min Students plot composite bar charts to show the changing percentages of carbon, oxygen and hydrogen. A ten centimetre bar is drawn for each of: vegetation, peat, lignite, bituminous coal