________ is the process by which thickened crust adjusts over time to a "normal" thickness

A) Subduction
B) Convection
C) Accretion
D) Isostacy


Answer: D

Environmental & Atmospheric Sciences

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Desert landforms, referred to as fans, can be made by ____

a. streams and debris flows b. salt weathering and the wind c. groundwater evaporation and weathering d. solution and the wind

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Sediments that are poorly sorted were most likely deposited by ________

A) a glacier B) a river delta C) organisms D) a volcanic eruption E) the wind

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The number of people over 65 represented as a percentage of the labor force is described as a(n)

A) dependency ratio. B) elderly support ratio. C) K-12 support ratio. D) national retirement ratio. E) demographic transition.

Environmental & Atmospheric Sciences

Favorable conditions or attributes of a place that attract migrants are known as:

A) push factors B) pull factors C) positive checks D) preventive checks E) none of the above

Environmental & Atmospheric Sciences