WHAT IS NON PERIODIC CHANGE
Non-periodic changes are the changes that do not repeat themselves after a fixed interval of time.
EG:----
*Tornado, Volcanic eruption, Tsunami, etc. (by that I mean most of the natural disasters)
*Forest Fires
EG:----
*Tornado, Volcanic eruption, Tsunami, etc. (by that I mean most of the natural disasters)
*Forest Fires
Hope this helps.........