Earth's inner core is a 2,450-km diameter ________ mass with temperatures up to 4,300°C (7,770°F).
A. solid
B. gaseous
C. liquid
D. plasma-like
Answer: A
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The comparison of the goods and services the same amount of money can actually buy in different countries is an economic measurement of development known as ________.
A. currency exchange rate B. gross national product C. gross domestic product D. purchasing power parity
Environmental groups have used ________ as an effective tool in making nations more compliant with environmental regulations.
A. Exposure to embarrass the country B. Trade sanctions C. World Trade Organization trade practices D. Reporting of violators to the international court E. None of these are effective in making nations more compliant with environmental regulations
Which of the four numbered features on this figure is the oldest?
A. 1 B. 2 C. 3 D. 4
Which of the following is the most common form of commercial agriculture in continental Europe between France and Russia?
A) mixed crop and livestock farming B) dairy farming C) grain farming D) livestock ranching E) Mediterranean agriculture