GROUNDWATER: http://www.youtube.com/watch?v=Iht9WBBXepA

DESALINATION PROCESS: http://www.youtube.com/watch?v=aysj7696b0

GULF STREAM AND THE NEXT ICE AGE (english subtitles): http://www.youtube.com/watch?v=1wafHA7H_qg

FORMATION OF A WAVE: http://www.youtube.com/user/ehawk48

FORMATION OF A TSUNAMI:  http://www.youtube.com/watch?v=chbbiSCczB8

WITHDRAWAL OF GLACIERS: http://www.eurasianet.org/departments/environment/articles/eav091203.shtml


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