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Glacier: a large mass of ice and snow that flows downhill on it's own weight, and survives all year.

Constant snowfall in high mountain ranges or at high latitudes collects and often never melts. This snow eventually gets compacted by it's own weight and turns to ice. After this ice becomes heavy enough, it will want to move downhill by gravity. A glacier is a river of slow moving ice carving it's path downhill, forming beautiful valleys in the process. Alpine glaciers are very common at the higher mountain ranges across the world, such as the Himalyas, the Sierra Nevadas and the Alps. Continental glaciers, such as Antarctica and regions in the highest latitudes of the North America and Russia, are massive sheets of ice that cover all of the land. Both types of glaciers flow in the same fashion.

Glacier

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