Pittsburgh was once the heart of the U.S. steel industry. What percentage of U.S. steel is manufactured in Pittsburgh today?
A) 0%
B) 5%
C) 10%
D) 2%
E) 30%
A
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The greatest potential for earthquake damage in the near future for the continental United States is in ____
a. ?St. Louis, MO b. ?Seattle, WA c. ?Los Angeles, CA d. ?Boulder, CO e. ?Portland, OR
Central Wisconsin and south-central Minnesota both have regions with the potential for landslides. However, neither of these locations is located in mountainous areas. Why might landslides occur in these specific regions?
A) Agriculture has destabilized the landscape B) Permafrost in the region is thawing C) These locations have steep bluffs along rivers D) The landscape has experienced tectonic uplift
New oil is born where ________.
A. there are continental swamps B. large animals, such as dinosaurs, once lived C. the Earth degases D. active plate subduction takes place E. dead organic matter is sealed in an oxygen-deprived burial