Answers

2014-01-08T18:04:30+05:30
Himalayas are covered with snow which when melts produces a waterfall. This melted snow forms the perennial rivers which are not-seasonal. 
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2014-01-08T21:06:43+05:30
 During the summer the snow melts and during the winter huge rain fall. This is the major reason that himalyan rivers are perennial in nature
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