In this article I will mention one of the ten principles of economics. The principle that I will mention in this article is the first principle of the ten basic principles of economics, there is a tradeoff. In recent years public opinion and major newspapers in the country have cost not less ink on the discharge of toxic substances cause serious pollution to the natural environment of the large factories in the country. According to statistics from the ministry of natural resources and the environment, each year hundreds of tons of dust and other toxic substances are emitted from large companies, it has a serious impact on the environment and natural ecological health health of people living close to such big companies. Due to this situation the authorities have repeatedly considered, whether to maintain the plant which annually bring national budgets which hundreds billion or country should retain a natural ecological environment, clean and people will have a clean air environment more. Balance between the two decisions, should retain large companies or a natural ecological environment of the authorities have shown to be a tradeoff between the selection of decision makers.
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