What has caused land subsidence in the Houston, Texas area?
A. Collapse of an extinct caldera
B. Man-made earthquakes
C. Collapse of an extensive cave system
D. Withdrawal of subsurface oil and water
Answer: D
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What is the main reason our knowledge of the Earth increased dramatically starting in the 1950s?
A. The cold war started. B. More scientists started studying the Earth. C. Improved technologies provided more data.
Which feature is interpreted to be in the Yellowstone region (1)?
A. a continental collision B. a foreland basin C. a continental hot spot D. a meteorite impact
Especially important in Daoism is to
A) perform public service. B) reflect on the mystical and magical aspects of life. C) respect forces of nature as divine. D) believe in one all-powerful God. E) read the holy texts daily.
Upper-air maps are commonly drawn for all the following pressures, EXCEPT:
A) 1000 millibars. B) 200 millibars. C) 500 millibars. D) 850 millibars. E) 700 millibars.