1. the concept of drought In the last 30 years. Countries, Thailand has accelerated economic development through the use of modern technology to farming, including hazardous chemicals. the new type, used in the production rights to add RA TA, the country with the development of the industry. In addition, the population also includes more were annulled are invading forest (Department of disaster prevention and mitigation. 2547. EPL: 1-72) to be used as living space. Some of the population emigrated to find work in the big cities. The community has expanded rapidly. Most of the space is crowded with buildings of various road building can provide. House Industrial plant. Tana, the environment and natural resources. Edit the pattern to the TA and da of urban projects. These changes make the natural resources, especially soil. More forests and weather patterns have been annulled and degraded. The natural ecological environment, waste an opportunity to make a balance of natural disasters are likely to occur, severity, and often much more, such as the occurrence of more forest. A sudden flood, mudslide and more drought, etc., while technological progress, and productivity in the industry. TA, disaster and accident are likely severity and even more complex, such as a gas blast of high-building fire. Oil spill chemicals spilled in the sea. Radioactive substances, etc.
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