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# Environmentalist: The complex ecosystem of the North

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Director
Joined: 23 May 2008
Posts: 762
Environmentalist: The complex ecosystem of the North [#permalink]

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20 Oct 2008, 14:36
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Environmentalist: The complex ecosystem of the North American prairie has largely been destroyed to produce cattle feed. But the prairie ecosystem once supported 30 to 70 million bison, whereas North American agriculture now supports about 50 million cattle. Since bison yield as much meat as cattle, and the natural prairie required neither pesticides, machinery, nor government subsidies, returning as much land as possible to an uncultivated state could restore biodiversity without a major decease in meat production.

Which one of the following most accurately expresses the environmentalist’s main conclusion?

(A) If earlier North American agricultural techniques were reintroduced, meat production would decrease only slightly.
(B) Protecting the habitat of wild animals so that we can utilize these animals as a food source is more cost effective than raising domesticated animals.
(C) The biodiversity of the North American prairie ecosystem should not be restored if doing so will have intolerable economic consequences.
(D) Preservation of the remaining North American bison would be a sensible policy.
(E) The devastation of the North American prairie ecosystem could be largely reversed without significantly decreasing meat production.
Intern
Joined: 01 May 2008
Posts: 8

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20 Oct 2008, 15:10
IMO E
VP
Joined: 17 Jun 2008
Posts: 1329

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20 Oct 2008, 15:19
bigtreezl wrote:
Environmentalist: The complex ecosystem of the North American prairie has largely been destroyed to produce cattle feed. But the prairie ecosystem once supported 30 to 70 million bison, whereas North American agriculture now supports about 50 million cattle. Since bison yield as much meat as cattle, and the natural prairie required neither pesticides, machinery, nor government subsidies, returning as much land as possible to an uncultivated state could restore biodiversity without a major decease in meat production.

Which one of the following most accurately expresses the environmentalist’s main conclusion?

(A) If earlier North American agricultural techniques were reintroduced, meat production would decrease only slightly. -> this is out of scope !!nowhere agro techniques discussed,only slighlty is not what author mentions
(B) Protecting the habitat of wild animals so that we can utilize these animals as a food source is more cost effective than raising domesticated animals. -> This appears generic to me but provided all others lose ,this option wins
(C) The biodiversity of the North American prairie ecosystem should not be restored if doing so will have intolerable economic consequences. ->this is out !!opposes what author conveys
(D) Preservation of the remaining North American bison would be a sensible policy. -> OUT preservation of bison is not in question ? since its been used for meat ..its their habitat that needs to be preserved
(E) The devastation of the North American prairie ecosystem could be largely reversed without significantly decreasing meat production. ->this is not logically following the above argumt ,compared to D it fails,we dont want to restore or reverse but we are saying convertion is not beneficial !!

IMO B
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Manager
Joined: 24 Sep 2008
Posts: 92

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20 Oct 2008, 20:58
(B)
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Manager
Joined: 12 Jun 2008
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21 Oct 2008, 03:30
IMO E
VP
Joined: 30 Jun 2008
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21 Oct 2008, 03:58
Another E. what is the OA ?
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VP
Joined: 17 Jun 2008
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21 Oct 2008, 04:58
Break the suspense and post the OA
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Manager
Joined: 16 Jan 2008
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21 Oct 2008, 08:14
E
Director
Joined: 23 May 2008
Posts: 762

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21 Oct 2008, 11:31
OA is E

I was torn between B and E, chose B. "protecting" the habitat should have been a red flag.

Last edited by bigtreezl on 21 Oct 2008, 11:35, edited 2 times in total.
VP
Joined: 05 Jul 2008
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21 Oct 2008, 11:32
I say E.
Manager
Joined: 21 May 2008
Posts: 83

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22 Oct 2008, 02:27
Only E can be derived from the passage. The other options are a bit out of scope.
Retired Moderator
Joined: 18 Jul 2008
Posts: 921

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22 Oct 2008, 14:18
E as well.
Re: CR:BISON   [#permalink] 22 Oct 2008, 14:18
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# Environmentalist: The complex ecosystem of the North

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