Which of the following molecules is(are) polar?
A) CH3Cl
B) HCN
C) both of them
D) neither of them
C
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Recent immigrants to the United States
A) are nearly evenly distributed among all states. B) are distributed evenly along the southern U.S. border and the east and west coasts. C) are concentrated in Texas, California, and Illinois and are seldom in other areas. D) have not been attracted to rural and agricultural areas. E) are spread throughout several states according to economic prospects.
In the final stage of the Demographic Transition, which of the following causes of death claims the most victims?
A) Malnutrition B) Smoking C) Undernutrition D) Infectious diseases E) Genetic diseases
Geologists believe that when the thick and high part of a mountain belt becomes too high and gravitationally unstable, ________ occur(s).
A. gravitational collapse and spreading B. rapid downcutting C. volcanic eruptions D. massive landslides E. basalt flows
Global circulation patterns of winds and ocean currents, which drive weather systems and, ultimately, climate patterns are created by
A) the coriolis force.
B) frictional force caused by the Earth's spinning on its axis.
C) imbalances created by energy surpluses and deficits at the equator and poles, respectively.
D) the differential heating properties of land and water.