______Is the Best Explanation for a Glacial Surge

question 29

Multiple Choice

______is the best explanation for a glacial surge.

• A)Crevasses opening suddenly near the snout of a glacier
• B)Heavy snowfalls resulting in avalanches in the zone of accumulation
• C)Melting at the base of the glacier resulting in increased rates of basal slip
• D)The climate cools suddenly and a retreating glacier begins to advance

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