Deep-focus earthquakes occur in subduction zones because
A. seismic energy propagates toward the center of the earth under subduction zones.
B. subduction zones represent particularly homogeneous regions of the earth's crust.
C. brittle lithosphere is carried to deeper depths in subduction zones.
D. the mantle is less dense under subduction zones.
Answer: C
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Infrared satellite images are useful for identifying cloud altitude because [INSERT FIGURE 6-35B. NO CAPTION]
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