Slabs of Oceanic Lithosphere Sink at Subduction Zones Because the Subducted

question 16

Short Answer

Slabs of oceanic lithosphere sink at subduction zones because the subducted slab is denser than the underlying asthenosphere. In this process, called ________, Earth's gravity tugs at the slab, drawing the rest of the plate toward the subduction zone.

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Definitions:

Variable Costs

Costs that change in proportion to the activity of a business.

Property Taxes

Taxes levied by local governments based on the assessed value of property, including land and buildings owned.

Contribution Margin

The amount remaining from sales revenue after variable expenses have been deducted, indicating how much contributes to covering the fixed costs.

Break-even Sales

The amount of revenue needed to cover both fixed and variable costs, resulting in no profit or loss.