Which of the following energy sources drives the hydrologic cycle?
A. solar energy
B. internal heat energy
C. gravity
D. wind energy
E. river flow
Answer: A
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Which organism typically lives along rocky coastlines within thick kelp forests?
The mantle can be separated into two different portions—the lower mantle and the upper mantle. The lower mantle is
A) completely solid due to extreme pressure that prevents rocks from melting. B) composed of putty that flows like molasses. C) rigid and cannot flow. D) predominantly liquid.
Geographer Derwent Whittlesey identified 11 main agricultural regions where divided by their importance to either developing or developed countries
Which agricultural region, that is important to the developing countries, covers the most area in the southern hemisphere? A) Grain B) Shifting cultivations C) Dairying D) Plantation E) Mediterranean
The source of radon gas in the home is typically
A) decay of airborne uranium B) uranium-bearing rocks and soil underlying the house C) waste from uranium mining operations in the region D) radioactive components of electronics equipment