Multiple Choice
Very minor earthquakes (2.0-3.0 on the Richter scale) occur on an average of 1000 per day. Earthquakes of magnitude 7.0-7.9 have an annual average occurrence of:
A) 8 per year.
B) 18 per year.
C) 128 per year.
D) 180 per year.
Correct Answer:
Verified
Correct Answer:
Verified
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