Which of the following sites would have the most dangerous volcanoes? A is on an island arc, B is in the Andes, C is near Hawaii, D is along a mid-ocean ridge.
A. A and B
B. A and C
C. B and C
D. B and D
E. C and D
Answer: A
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The line which demarcates the pronunciation of "about" and "a-boot" is called an
A) isopleth. B) isodapane. C) isohyet. D) isoline. E) isogloss.
Radon is an intermediate product of uranium-238 decay.
Answer the following statement true (T) or false (F)
The "plastic" region of the upper mantle extending from about 70 km beneath Earth's surface to 250 km is known as the
A) Gutenberg discontinuity. B) Mohorovi?i? discontinuity. C) outer core. D) crust. E) asthenosphere.
Most present-day fisheries managers ________
A) favor protection of commercially valuable species and not others B) favor short-term solutions to marine ecosystem problems C) want all laws regarding fishing to be abolished D) favor taxes on commercial fishing boats E) wish to set aside areas of ocean where systems can function without human interference