Important terms

Main terms.

Perinial river : Rivers which flow through out the year. ex. ganga,sindhu,       Brahmaputra.

.Dun : The valleys laying between the lesser Himalayas and shiva lik ranges are called as duns.

Leeward :-The side of prominence as a hill that sheltered from the wind.

G.M.T.: green which mean time.

I.S.T.   :Indian standard time.