Past, economists have neglected the environment is to calculate the value of the product national income (GNP) of each country. Not taking into account the environmental costs, but how to break the soil surface and ground water resources, forests, due to the effect of the manufacturing process, regardless of the lack of environmental sustainability. It has a serious impact on the productivity of the country in the long term. While it may impact the value of the product national income (GNP) just today, so it's absolutely essential to the economic analysis in terms of the quality of the environment in the long term.
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