Glaciers are made up of fallen snow that, over many years, compresses into large, thickened ice masses - when snow remains in one location long enough to transform into ice you have a glacier. What makes glaciers unique is their ability to move. Due to sheer mass, glaciers flow likery slow rivers. Remnants from the last Ice Age, at present glaciers occupy about 10 percent of the world's total land area, with most located in polar regions like Antarctica and Greenland.
Charles Mims
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