The seismic-risk map of the United States is based on
A. frequency of occurrence of past earthquakes only.
B. observations of precursor phenomena.
C. severity of past earthquakes and anticipated ground motion in future ones.
D. a prediction of the likelihood of future earthquakes.
Answer: C
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What approach do many analysts call for in approaching our waste problems?
A. Waste management only B. Waste reduction only C. Integrated waste management D. Reusing only E. Recycling only
Jerusalem contains the Dome of the Rock, the Al-Aqsa Mosque, and the Western Wall, holy sites for Jews, Christians, and Muslims
Indicate whether the statement is true or false
What region generates the most refugees, currently numbering about 6 million?
A) Africa B) Europe C) former Soviet Union (Russia + surrounding countries) D) Latin America E) Mediterranean
Which of these statements about Earth's tides is correct? a. The tides consist of two very long wavelength waves
b. There are typically six hours between successive high tides. c. Most places on Earth have one high and one low tide per day. d. They are caused by convection currents in the mantle. e. They are caused by the gravitational attraction between Earth and Mars.