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Zoologists warn of an imminent surge in the number of animal [#permalink]
24 Jul 2006, 13:03
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Zoologists warn of an imminent surge in the number of animal species that will become extinct within this century. They caution that the rate of extinction will only increase. They are wrong, however. One need only consider the information gathered on insects: 47 species of North American insect vanished between 1900 and 1950, but only 23 species of such insects became extinct between 1950 and 2000.
The answer to which of the following questions provides information that would be most helpful in evaluating the argument above?
A. How many species of non-native insect species have been introduced into North America since 1950?
B. Has any special effort been made to save North American insect species?
C. How many years' experience do the zoologists have in evaluating patterns of extinction among animals?
D. Are insects susceptible to the same causes of extinction as are mammals?
E. How many acres of woodland are set aside each year as wildlife refuges?
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