Explain the work done by Glacier in 7-8 lines.[Class 9]
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A glacier is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation (melting and sublimation) over many years, often centuries. Glaciers slowly deform and flow under stresses induced by their weight, creating crevasses, seracs, and other distinguishing features. They also abrade rock and debris from their substrate to create landforms such as cirques and moraines. Glaciers form only on land and are distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water.Glaciers erode terrain through two principal processes: abrasion and plucking. As glaciers flow over bedrock, they soften and lift blocks of rock into the ice. ... Glaciers produce these when they contain large boulders that carve long scratches in the bedrock.
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