Natural calamities do occur, what do you think? Is it God's punishment? How do you justify for the sufferings of innocents? Are there any lessons? Do you think sometimes human becomes the initiater for such calamities?
It is simple. Nature has its own composition for strength. Human beings are disturbing the nature by weakening it by destroying forests, hills and invariably calamities will happen beyond some points. We humans are the main reasons for such calamities.