What Property of the Crust Allowed It to Form as the Exterior

question 21

Multiple Choice

What property of the crust allowed it to form as the exterior of Earth?

• A)Magma at the surface cooled and crystallized before anything in the interior.
• B)Materials that make up the crust are less dense and rose to the top.
• C)Churning and upheaval in the interior thrust crustal rocks toward the surface.
• D)Meteorites impacting Earth deposited this material at the surface.

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Definitions:

Income Mobility

The ability of an individual, family, or some other group to improve (or lower) their economic status—often measured by income—over time.

Income Ladder

A metaphorical representation of individuals or households ranked by their level of income.

Income Comparisons

The evaluation or analysis of an individual's or group's income in relation to others within the same society or economy.

Implicit Marginal Tax Rate

The effective additional tax rate imposed on an individual or entity's incremental income, typically factoring in deductions, exemptions, and benefits phase-outs.