The Margins of Glaciers Are Usually Darker Than the Interior

question 37

Multiple Choice

The margins of glaciers are usually darker than the interior primarily because

• A)shearing causes the ice to expel air and become darker.
• B)glaciers are transparent so the underlying bedrock is visible.
• C)the sides are moving faster than the interior of the glacier.
• D)the sides have a higher concentration of rocks and other debris.
• E)All of these.

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Definitions:

Government's Economic Activity

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Economic Efficiency

The optimal allocation of resources to maximize the production of goods and services. Efficiency is achieved when no additional output can be gained without increasing the amount of inputs.

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A situation where individuals in a group fail to achieve a common or collective goal because they prioritize their personal interests.

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A practice in politics where individuals or parties exchange favors for mutual benefit, often seen in legislative voting processes.