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coal-fired power plants. despite the fact that coal is a non renewable resource on earth, it's enough. at the beginning of the 21st century coal again began to actively useas the oil and natural gas, the two other types of fuel, widely used for electricity generation, is decreased. the use of coal does not solve the energy problems of mankind once and for all.but he remains at our disposal, as we try to develop sustainable alternative sources of energy.
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