For the average U.S. resident, the single largest source of radiation exposure is
A. exposure to radon gas.
B. medical X rays.
C. radioactive fallout from the atmosphere.
D. operation of nuclear reactors.
Answer: A
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Biologist Garrett Hardin coined what term in 1968 to describe misuse of resources?
A) unsustainable development B) inequitable distribution of goods C) non-point source pollution D) spatial mismatch E) tragedy of the commons
Ethanol is produced industrially by the acid catalyzed reaction of ethylene with water. The balanced equation for this reaction is: C2H4(g) + H2O(g) ? C2H5OH(l) If water is present in excess, how many moles of ethanol can be produced from 7.24 mol of ethylene?
A) 7.24 B) 14.5 C) 28.0 D) 46.0
An increasingly complex division of labor has been fueled by
A) a rise in the proportion of non direct production workers. B) the aging of the baby boom. C) rising incomes. D) firms no longer need administrative bureaucracies. E) service exports.
In terms of general location of a climate, in what place would one expect to find a humid continental climate in the United States?
A) The Southwest (Phoenix, Arizona) B) The Northwest (Seattle, Washington) C) The Southeast (Atlanta, Georgia) D) The Great Lakes (Buffalo, New York) E) South Central (Dallas, Texas)