A factor that can influence earth's temperature but not be influenced by humans is
A. aerosol concentration.
B. variations in solar radiance.
C. atmospheric albedo.
D. surface albedo.
Answer: B
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GPD and per capita GDP
A. measure and compare cap-and-trade benefits. B. measure and compare the efficiency of tax shifting. C. measure and compare subsidies provided by more-developed nations. D. measure and compare the economic output of nations. E. generally are not useful for economists.
Which of the following modern countries of South America was NOT part of Gran Colombia?
A) Ecuador
B) Guiana
C) Venezuela
D) Bolivia
E) Panama
The “Gas” layered above the oil is called natural gas. It is
1.propane.
2.methane.
3.hydrogen.
4.unrefined gasoline.
The abduction and enslavement of thousands of Africans who were brought to the Americas against their will as laborers is an example of which of the following?
A) Voluntary migration B) Forced migration C) Reluctant migration D) Chain migration