A disaster is a disaster that causes damage to life and property by affecting economic and social life of the people in both short and long term disaster, is divided into two categories, namely natural disasters and man-made disasters.Natural disasters are caused by natural disasters such as storms, floods fire, earthquake-proof by this blast is a blast of high light sensitivity with kaes nature released to outside. In addition, natural disasters include the outside world such as meteors.Man-made disasters are disasters caused by human beings, such as the underground water pumping large quantities until the result of the ground. Large amounts of greenhouse gas emissions from industrial plants, until as a result, sea level rise and flood areas in the lower level. Changing the water until it caused drought in some areas, etc., as well as scientific experiments, such as a nuclear bomb underground experiments that affect the stones beneath the crust. It may affect the world in the long run, etc.
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