An example of ________ is the migration of doctors and engineers to the United States after they have received years of government-financed schooling and training in Colombia
A) brain drain
B) chain drain
C) chain migration
D) net migration
E) cohort migration
Answer: A
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The pilot leader
A) occurs after the stepped leaders have built a path to the ground. B) transfers electrons toward the ground. C) causes the brilliant flash of lightning. D) forms many small and brilliant branches. E) none of the above
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A) focused on the negative effects of chemical fertilizers. B) led to the banning of DDT and other harmful chemicals in the United States. C) led to international rules prohibiting the use of harmful pesticides in developing countries. D) did major damage to the environmental movement in the United States.
The geography of American settlement is changing mostly due to economic factors. What are four prominent patterns in this shifting settlement?