To remind people that they should  be always aware of the natural calamities..people should always prepare on these kind of situation because calamities comes naturally and we cant control them nor stop them.. and these calamities will and always affect our lifestyle, and affecting our lifestyle is affecting health... 
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thank you :))
welcome..hope I have helped you! :)))
To make us think and to make aware on what will happen and make us prepare in any calamities that will come.