List six threats from natural disasters.
* earthquakes - loss of power, loss of communication lines, damage to ICT systems caused by building collapse, etc.
* lightning strikes - momentary losses of power which can cause data loss, can also cause more serious damage however with the complete loss of hardware, software and data
* floods - water damage to hardware, software and data, loss of power of communication lines
* tidal waves - usually these occur after earthquakes when they are called tsunamis
* volcanoes - fire and smoke damage, destruction of buildings
* gales - loss of power lines, destruction of communication equipment, etc