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What are glaciers? A glacier is a large mass of ice, snow and rock debris which move very slowly, accumulate in great quantities and flow down under the pressure of their own weight. They are mostly found at high altitudes and form when the yearly snow in a region goes above the amount of snow and ice melting in a given summer. This formation of glaciers shaping the landscape is called Glaciation. A glacier is usually formed on land and then moves in response to gravity and goes through internal deformation. How do glaciers form? * First of all snow falls and these snowflakes are collected together in a hollow in the mountainside. * This snow builds up compressing it together so that the snowflakes become more round and compact. This is called a Firn. The snow carries on collecting until the weight squeezes the Firn into ice. This ice is of...

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