摘 要: | Environmental issues, mainly the global warming, the ozone layer depletion,the acid rain, the air and water pollution, the desertification, and the loss ofbiodiversity--have caught attention of the entire human race. It is now universallyacknowledged that environmental protection is a political and social problem as wellas an economic one. It involves various sectors of the national economy and so hasan important bearing on sustainable economic and social development of all nations.
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