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Zoologists warn of an imminent surge in the number of bird

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Director
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Zoologists warn of an imminent surge in the number of bird [#permalink] New post 04 May 2010, 05:27
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Question Stats:

67% (01:58) correct 33% (01:20) wrong based on 20 sessions
Zoologists warn of an imminent surge in the number of bird species that will become extinct within this century. Nevertheless, these zoologists are wrong. One need only consider the information gathered on native North American raptors, such as bald eagles and peregrine falcons. Several of these species came close to vanishing between 1900 and 1970, but since 1970, the local populations of these raptors have rebounded.

The answer to which of the following questions provides information that would be most helpful in evaluating the argument above?

• How many species of non-native raptors have been introduced into North America since 1970?
• What special efforts, if any, have been made to rescue native North American raptors since 1970?
• How many years’ experience do the zoologists have in evaluating patterns of extinction among animals?
• To what degree have native North American raptors migrated to other parts of the world?
• How many acres of woodland are set aside each year as bird refuges?
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Re: North American raptors [#permalink] New post 04 May 2010, 05:38
ykaiim wrote:
Zoologists warn of an imminent surge in the number of bird species that will become extinct within this century. Nevertheless, these zoologists are wrong. One need only consider the information gathered on native North American raptors, such as bald eagles and peregrine falcons. Several of these species came close to vanishing between 1900 and 1970, but since 1970, the local populations of these raptors have rebounded.

The answer to which of the following questions provides information that would be most helpful in evaluating the argument above?

• How many species of non-native raptors have been introduced into North America since 1970 >> Does it evaluate/check the validity of the argument or affect the premise : NO
• What special efforts, if any, have been made to rescue native North American raptors since 1970? >>> Affects the premise, if special efforts were made... then "present" decline may not rebound without special actions. And Zoologists are then right in their prediction >> CORRECT
• How many years’ experience do the zoologists have in evaluating patterns of extinction among animals? >> Out of scope
• To what degree have native North American raptors migrated to other parts of the world? >>> Does migrating solves/explain the problem of decline..NO
• How many acres of woodland are set aside each year as bird refuges? >>> Out of scope

Conclusion: these zoologists are wrong

IMHO B

OA PLZ.

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Re: North American raptors [#permalink] New post 04 May 2010, 06:20
IMO B

what we need to evauluate --> would the species go extinct or can we do something about it ?



• What special efforts, if any, have been made to rescue native North American raptors since 1970?


if special efforts can save native American raptors maybe they can also save other species of birds
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Re: North American raptors [#permalink] New post 18 Jul 2010, 07:52
B for me too. Do we have OA?
Re: North American raptors   [#permalink] 18 Jul 2010, 07:52
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Zoologists warn of an imminent surge in the number of bird

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