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![Icy Vocab](/nationalgeographic/pioneer_november_december_2019_river_of_ice/activity_icy_vocab/726371/icy_vocab.320_0_1.png)
Hello. I'mM.Jackson. Iama glaciologist. Istudyglaciersaroundtheworld. Aglacierisamovingriverofice. ItflowsoverEarth's surface.
Aseracisaridgeoficeonaglacier.Seracscanbefuntoclimb.Acrevasseisacrackinaglacier.Ifellinadeepone,once.Luckily,myteamfishedmeoutof it!
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