Earthquake is the abrupt movement of the crust of the earth. It begins naturally under the surface. The two main causes of the earthquakes are the Tectonic activity linked with the plate margins and the faults in these plates.
Most of the earthquakes that take place are caused by this activity. Earthquake can be caused by volcanic eruptions also but these occur in the regions near the volcanic activity.
hello
i would like a little more infomation please