A mountain glacier begins to melt due to warmer air temperatures, exposing some dark gray rock once covered by the glacier. Explain how this could trigger a positive feedback in which the exposed rock causes more melting of the mountain glacier. Support your response using your knowledge of albedo, the albedo values provided below, and scientific reasoning.

The glacier have high albedos the melting of ice in summers produces a positive mechanism.

Explanation:

Over the time period, the ice melts and this leads to exposure of the dark grey rocks and causes more melting of the mountain glacier. The reflection from glacier snow is highest as ice absorbs less sunlight and keeps the surface cooler.  Thus reflecting back 90% of sunlight, in summer months due to the erosion agents the ice begins to move and this adds to the positive feedback mechanism that melts glaciers.

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