Approximately how much more energy is released in an earthquake of Richter magnitude 6.5 than in a magnitude 5.5 earthquake?
A) 3.2
B) 32
C) 320
D) 3,200
Answer: B
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Approximately 70 percent of Americans live in urbanized areas, including about 30 percent in central cities and 40 percent in surrounding jurisdictions
Indicate whether the statement is true or false.
What is a tombolo?
A) An embayment parallel to the shore B) Interconnected marshlands in a river C) A passage to the ocean within a bar D) A bridge of sediment that connects a sea island to the mainland
Which of the following is the least biodegradable?
A) Paper bag from a grocery store B) Leaves and branches piled up on a hillside C) Glass beer bottle D) Polyethylene wrapper that was used to package Campbell's soup
An El Nino event is likely to be associated with
A. cooler surface waters in the Pacific. B. increased upwelling. C. changes in paths and intensities of Pacific storms. D. All of the choices are correct.