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Coal
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.
Contributors in 石炭
Coal
締約国会議(COP)
エネルギー; 石炭
気候変動(FCCC)の枠組み条約を批准した国の集まり。COPの主な役割は、レビューの下FCCCの実装を維持し、その有効な実施を図るため必要な意思決定をすることです。また、(FCCC)気候変動枠組条約を参照してください。 ...