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World map Reserves of fossil fuels
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141 Countries Africa annual areas average billion mtce biogas biomass biomass resource capita century chart 12 China commercial energy compared conservation costs dependent developing countries developing nations developing world duction economic growth efficient electricity energy consumption energy demand energy demand management energy future energy needs energy prices energy resources energy supply environmental estimates expected factors forms of energy fossil fuels fuelwood and charcoal geothermal global heat hydro hydropower increase industrial countries International Energy Agency investment m.mtce yrs major metric tons million metric tons natural gas North America nuclear energy nuclear power oil prices OPEC overall percent petroleum plants policies population potential problems Production Consumption reactor regions renewable resources require reserves rise solar sources of energy South Asia Swaziland thermal tion tons of coal transportation United waste Western Europe wind wood World Bank World Energy Conference world production Zambia