Meeting the new 2009 higher CAFÉ standards in the United States will result in
A) fewer coal-burning power plants.
B) increased reliance upon wind and solar energy.
C) increased reliance upon natural gas.
D) better gas mileage and less air pollution.
D
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Las Vegas depends on the heritage industry to attract tourists
Indicate whether this statement is true or false.
By Newton's third law, if action is the force the string pulls on the can to make it follow a circular path, the reaction force is then
A. the can pulling on the string. B. the outward tug on the string. C. string pulling on Nellie's hand. D. Nellie's pull on the string.
Carbon dioxide reacts with water to form
A) carbon dioxide and water. B) carbonic acid. C) sodium bicarbonate. D) hydrated carbon.
The first Chinese civilization developed in the
A. Huang He (Yellow River) valley B. Chang Jiang (Yangtze River) area C. Gobi Desert D. Tibetan Plateau