Which African nation does the United States consider an economic powerhouse and critical to the stability of the continent?
a. Botswana
b. Lesotho
c. Swaziland
d. South Africa
e. Congo
d
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Which of the following gases absorbs most of the harmful ultraviolet radiation in the stratosphere?
A. nitrous oxide B. carbon dioxide C. ozone D. chlorofluorocarbons
Which of the following acts as a barrier to diffusion of ideas and/or cultural traits?
A. man-made laws B. the earth's topography C. distance D. all of these
The inside of a car or greenhouse would not heat up as much in the presence of sunshine if
A) air was circulated within the car or within the greenhouse. B) infrared radiation passed through glass as easily as sunlight. C) infrared radiation could not pass through glass as easily as sunlight. D) sunlight could pass through glass more easily than through air.
While energy budgets vary latitudinal, they are fairly constant at specific locations throughout the year. For instance, the energy budget at 32° does not vary throughout the day or year
Indicate whether the statement is true or false