Which Best Describes Permafrost

question 22

Multiple Choice

Which best describes permafrost?

• A)It develops where soil or rock temperatures are below freezing for at least two years.
• B)It primarily occurs in areas covered with glaciers.
• C)The surface layer of permafrost never thaws,even in the warm season.
• D)It tends to occur at lower elevations in the midlatitudes than in the high latitudes.

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Definitions:

Marginal Cost

The additional cost incurred in producing one more unit of a good or service.

Variable Cost

Costs that change in proportion to the level of production or sales activity of a business.

Total Cost

The overall expense incurred in the production of goods or services, including both fixed and variable costs.

Fixed Cost

Expenses that do not change with the level of production or sales, such as rent, salaries, or insurance premiums.