Poorly sorted, unconsolidated Earth material that includes at least 20 percent gravel is called:

a. rock.
b. mud.
c. talus.
d. debris.
e. soil.


D

Environmental & Atmospheric Sciences

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Which of the following is used to describe the half of the Earth that lies north of the Equator?

Southern Hemisphere. Northern Hemisphere. Western Hemisphere. Eastern Hemisphere.

Environmental & Atmospheric Sciences

The annual global growth rate of the human population peaked at 2.1% in the ________ and has been declining ever since

A) early 1900s B) 1950s C) 1960s D) 1990s E) year 2000

Environmental & Atmospheric Sciences

Of the following, the best example of a product of mass wasting is ________

A) exfoliation domes B) sandstone monoliths C) faults D) scree E) limestone

Environmental & Atmospheric Sciences

Which of the following is not a characteristic of an actively erupting volcano?

A) Totally covered in a fresh blanket of clean, white snow B) Billowing ash column rising into the sky C) Glowing lava flows moving down mountain slopes D) Rapidly melting glaciers/snowpack producing massive mudflows

Environmental & Atmospheric Sciences