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The outer limits of the zone of accumulation are defined by the snowline.

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Glaciers are capable of carrying huge blocks of material that no other erosional agent could possibly transport.

Which of the following statements is true of valley glaciers?

A. They are found in mountainous regions.
B. There are thousands of such glaciers on Earth today.
C. They flow downhill.
D. All of the above are true.
E. None of the above are true.

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An ice age is period of long-term reduction in the temperature of Earth＇s surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers.

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Glaciation is the formation, movement, and recession of glaciers or ice sheets in a period of time.

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