Answers

2016-02-11T20:46:10+05:30
Resources are things gifted to us by nature.
calamities are some natural hazards
when calamities cause destruction to life and property in a large scale it is called disaster.
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2016-02-11T21:52:37+05:30
Coal becomes a resource only when humans are able the use it , similarly all resources on earth only become resources if humans can use them for some reason or in some way. The same goes for calamities and disasters, a tsunami or earthquake will only become a disaster if human life is affected by them. 
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