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Earthquakes Occur Because the Surface of the Earth Is Composed

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Earthquakes occur because the surface of the earth is composed of giant rigid plates, and these plates are constantly moving. When one plate rubs against another, the motion of the plates in that area is halted, and strain builds up. Eventually the edge of the plate cannot withstand the increasing strain, and it breaks. The resulting shudder is felt as an earthquake.


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Total Variable Costs

The sum of all costs that vary directly with the level of production or service provision, such as materials and labor.

Total Sales Revenue

The total amount of income generated by the sale of goods or services before any costs or expenses are deducted.

Cost Object

A cost object is any item for which a separate measurement of costs is desired, including products, services, projects, or activities.

Denominator Volume

The quantity or capacity used as the denominator in allocating fixed costs to different units, often affecting the cost per unit calculation.

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