Most grasslands in North America have been heavily influenced by:
A. Agriculture and the grazing of domesticated animals.
B. Oil and gas development.
C. Development of shopping malls.
D. Urban development.
Answer: A
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Which one of the following is TRUE regarding tsunamis?
a. they travel as deep-water waves at speeds greater than surface seismic waves but slower than S waves b. their wave heights decrease and wavelengths increase as they move into shallower water c. they are started by fault-induced, horizontal shifts in the seafloor that suddenly propel great masses of water in opposite directions d. they occur in the open ocean, wavelengths are many miles or kilometers and wave heights are only a few feet
Attracting talented individuals is important for a city, in part because these individuals are:
A) those who make the city famous B) responsible for promoting economic innovation C) those who pay the largest share of taxes while sacrificing the most D) those who run for political office E) responsible for most of the high-tech jobs created
How are people living near the Great Lakes impacted by the weather changes related to presence of a large body of water?
A) Temperatures are unaffected by the presence of the lakes, and precipitation is increased. B) Temperatures are unaffected by the presence of the lakes, and precipitation is decreased. C) Temperatures are moderated by the presence of the lakes, but precipitation is increased. D) Temperatures are moderated by the presence of the lakes, but precipitation is decreased.
In which climate does a shift in wind direction serve as the most important controlling factor?
a. tropical monsoon b. tropical steppe c. tropical savanna d. tropical rainforest