Disaster refers to a sudden accident or a natural catastrophe that causes great damage to both lives as well as property. Disasters are seen as consequences of inappropriate managed risk. These risks are the product of a combination of both hazards and vulnerability.
Natural catastrophes can cause immense economic and human losses. Floods, storms, earthquakes, droughts and volcanic eruptions are among the most devastating types of natural disasters. But some disasters are man- made. These includes explosions, major fires, railway accidents and release of toxic substances into the environment. A natural disaster is a consequence of when a natural hazard (such as volcanic eruptions, earthquakes, landslides) becomes a physical event and interact with human activities while man- made disasters are result of human vulnerability. Human vulnerability is caused by the lack of planning or lack of emergency management.
Men’s irresponsible actions have affected the balance of the systems in the environment. For instance, actions of men like cutting down trees and destroying the sources of water in the area which at last leads to drought and forest fires. Disasters whether natural or man-made greatly affect our environment. It not only results in mass loss of lives but also adversely affect the economy of the region.