Rossby waves:
A) usually move from west to east.
B) usually occur in Difficulty:
Global sets of ten or more.
C) change little from season to season.
D) tend to reinforce normal weather patterns at middle latitudes.
Answer: A
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North Americans account for about 5% of the world's population but consume:
A. 10 percent of the world's oil. B. 15 percent of the world's oil. C. 5 percent of the world's oil. D. 22 percent of the world's oil.
About 80% of the ocean's water exists in the ________
A) pycnocline B) thermocline C) surface zone D) deep zone E) euphotic zone
During a demographic transition, the death rate drops while the birthrate remains high.
Answer the following statement true (T) or false (F)
Where will you find the greatest concentration of different species?
A. the poles B. Europe C. the tropics D. Siberia