Suppose the wind speed increases from 8 km/h to 16 km/h. Which of the following expresses the factor by which the force of the wind will have increased?
A. 2
B. 4
C. 5
D. 25
Answer: B
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Why do the authors of your text use the word "domain" when talking about "the Russian Domain"?
A) The term suggests persisting Russian influence within the region. B) "Russian Domain" is an official name, reflecting the continuing federal relationship between the countries in the region. C) Domain refers to a federal subdivision. D) Domain refers to a kingdom. E) The term is the name of the free trade zone now evolving in the region.
During the last glaciations, what were the moisture conditions like?
A) very wet B) the same as today C) a little drier D) more than 50% drier in the northern latitudes
The best way to avoid the evolution of pesticide resistance is to
A) use more of the pesticide anytime resistance appears. B) use crop rotation and biological controls instead of pesticides. C) develop new forms of pesticides. D) apply pesticides to the soil before planting and after harvesting a crop.
Motor vehicles are the world's largest source of out- door air pollution, causing about ____ premature deaths per year in the United States.
A. 100 B. 1,000 C. 11,000 D. 100,000 E. 1,000,000