Paleoseismologic analysis of trenches cut across faults and folds in the New Madrid, Missouri, area has led the U.S. Geological Survey to forecast a 25% chance of a magnitude ________ earthquake here within the next 50 years.
A. 9+
B. 8.5 to 9
C. 7.5 to 8.5
D. 6 to 7
Answer: D
Environmental & Atmospheric Sciences
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