The combination of the CBR and the CDR is (the)
A) rate of natural increase.
B) infant mortality rate.
C) dependency ratio.
D) life expectancy.
E) net migration.
Answer: A
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Two-thirds of business and professional service jobs in the U.S. are located in
A) the suburbs. B) New York City. C) large urban areas. D) dispersed medium-sized cities. E) California.
Which of these two fires started within a few minutes of each other on 8 October 1871?
A. the Peshtigo and Chicago fires B. the Peshtigo and San Francisco fires C. the Rome and San Francisco fires D. the Oakland and San Francisco fires E. the Chicago and San Francisco fires
Gray whales begin to migrate south when ________
A) breeding has concluded B) killer whales start to attack C) pack ice begins to form D) the calves are nursing E) the first calves are born
Geographers C. D. Harris and E. L. Ullman developed the ________ model in 1945
A) concentric model B) sector model C) multiple nuclei model D) adaptive concentric model E) successive hierarchy model