1. passing see problems rather than consider just chen. the economic benefits that may be causing natural resource degradation occurs after development.2. it helps to consider the environmental impact and the severity of the development project.3. to help forecast the key aspect of the problem correctly, etiology by measures that are possible in practice, and the least costly.4. is the decision support information before investing or development project. Financial planning, management, environment and related agencies. In order to prevent a conflict of the use of resources.
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