Aftershocks occur because ________.
A) seismic energy continues to build up for a period of time after a major earthquake
B) the day after a large earthquake there are tidal forces that continue to create additional earthquakes
C) the area surrounding a region that experienced a large earthquake needs time to adjust to the displacements on the main fault
D) there are always small earthquakes on major faults,but we do not notice them until there is a large event that makes us aware of them
Correct Answer:
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