 It is natural happening that will have a negative effect on people or the environment.

 An earthquake is a phenomenon that results from a surface release of stored energy that radiates seismic waves.

 Earthquakes may manifest themselves by a shaking or displacement of the ground and sometimes tsunami. Many earthquakes happen each day, few of which are large enough to cause significant damage.

 Floods are the result of prolonged rainfall from a storm, including thunderstorms, rapid melting of large amounts of snow. Flood

 The EU Floods directive defines a flood as a temporary covering by water of land not normally covered by water. Flooding may result from the volume of water within a body of water, such as a river or lake, which overflows or breaks levees.

A volcanic eruption is the point in which a volcano is active and releases its power, and the eruptions come in many forms. They range from daily small eruptions which occur in places like. Volcanic eruption

 The effects include the volcanic eruption itself that may cause harm following the explosion of the volcano or the fall of rock. Second, lava may be produced during the eruption of a volcano. As it leaves the volcano, the lava destroys many buildings and plants it encounters. Third, volcanic ash generally meaning the cooled ash - may form a cloud, and settle thickly in nearby locations.

Draught Tornado Tsunami