A 'natural disaster' is a major event resulting from natural processes of the Earth. It causes a great loss of life and property. During such disasters, the number of people who are rendered, trippled and houseless is more than the number of people who loose their lives. Even the economy of the place which faces a natural disaster, gets effected.
It is true that a natural disaster is a natural process and we cannot stop it but by making certain preparations, we can reduce the magnitude of the loss to life and property.