2. the disaster is caused by human action, are as follows: 2.1 fire 2.2 threats from chemical and hazardous material 2.3 the transportation 2.4 building collapse 2.5 natural disasters, technology (Technological Disaster).
2. disasters caused by human action, including 2.1 Fire 2.2 hazards of chemicals and hazardous materials 2.3. Threat of Transportation building collapsed 2.4 disasters 2.5 technology. (Technological Disaster)