Multiple Choice
Deep-focus earthquakes occur in subduction zones because
A) Brittle lithosphere is carried to deeper depths in subduction zones.
B) Subduction zones represent particularly homogeneous regions of the earth's crust.
C) The mantle is less dense under subduction zones.
D) Seismic energy propagates toward the center of the earth under subduction zones.
Correct Answer:

Verified
Correct Answer:
Verified
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