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Damage by 2011 Tōhoku earthquake and tsunami

A natural disaster is a major event caused by the natural processes of the Earth. Examples are floods, hurricanes, tornadoes, earthquakes, volcanic eruptions, tsunamis and other geologic processes. A natural disaster causes loss of life or property damage, and leaves some economic damage afterwards costing millions.

Human activities may be the cause causes of natural disasters, such as climate change and deforestation.