Thermohaline circulation is a ____ phenomenon
A) small-scale
B) global
C) local
D) coastal
B
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A valley breeze:
A) has more in common with a sea breeze than with a land breeze. B) causes air to flow downward. C) occurs at night. D) is stronger in low ranges of hills than in high mountain ranges.
North Atlantic hurricanes all have an eye diameter of ________.
A. 50-75 km B. 1-5 km C. 16-70 km D. 10-20 km
Which of the following describes the concentration of CO2 in the lower atmosphere?
A. It is 30 percent higher than it was 300 years ago. B. It has stabilized. C. It is not related to the amount of forest cover on Earth. D. The present average measurement is 150 ppm.
How much do mountains rise with each addition of 1000 meters of crustal material?
A. 2 meters B. 200 meters C. 20 meters