The oldest ocean crust is located ________.
A. on top of oceanic hot spots
B. next to continental margins
C. in the middle of ocean basins
D. along mid-ocean ridges
Answer: B
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Approximately how much of the world's estimated oil and gas reserves can be found within the sediments of the continental margins?
A) One-third B) One-half C) Two-thirds D) Three-quarters
Which of the following is not used to aid in earthquake prediction?
A. tsunamis B. seismic gaps C. foreshocks D. patterns of earthquakes E. increase of radon emissions from water wells
What percent of children in Sub-Saharan Africa dies before the age of five?
A) 0.2% B) 2.0% C) 20% D) 12.2% E) 2.2%
German geographer Friedrich Ratzel suggested that each nation needed Lebensraum, which means
A) geopolitics. B) room to live. C) survival of the fittest. D) the strong will survive at the expense of the weak.