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In the late 1980 s, the population of sea otters in the

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Re: sea otters [#permalink] New post 08 Sep 2010, 20:51
Premise : The number of sea otters has declined.
Premise: The sea lions and seals are affected by pollution related disease

Conclusion: Otters are also affected by the disease and that's the reason of decline in numbers

A states that as there is scarcity of sea lions and seals, the whales are preying the otters.

which weakens the reasoning.
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Re: sea otters [#permalink] New post 08 Sep 2010, 21:04
this was an easy A...
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Re: sea otters [#permalink] New post 14 Oct 2010, 22:50
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A seems the best..
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Re: sea otters [#permalink] New post 23 Oct 2010, 13:25
+1 A
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Re: sea otters [#permalink] New post 05 Nov 2010, 13:31
A is the only one which closely weakens the QS.

In C...it can be talking about another region around Pacific coast.
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Re: sea otters [#permalink] New post 11 Nov 2010, 11:29
Hi i disagree with option (a). It states that whales would usually eat the seals, but when this source gets scarce they move to other sources - we can not assume that they'll eat otters.

The otters' population might actually be affected by pollution like the seals and this argument does not weaken that. "Other sources" may or may not be otters.
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Re: In the late 1980 s, the population of sea otters in the [#permalink] New post 06 Aug 2012, 20:24
Can anyone tell me vvhat is the conclusion of this argument

vvhat are vve trying to vveaken here could not follovv please

Thanks
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Re: In the late 1980 s, the population of sea otters in the [#permalink] New post 01 May 2014, 19:30
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Re: In the late 1980 s, the population of sea otters in the [#permalink] New post 31 Jul 2014, 01:18
it is good question indeed, struck between a and C , took a time and then realize

Killer whales in the North Pacific usually prey on seals and sea lions but will,
when this food source is scarce, seek out other prey.--->had killer whales eaten them they would have got infected by disease and would have died , there number does not decrease So A
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Re: In the late 1980 s, the population of sea otters in the   [#permalink] 31 Jul 2014, 01:18
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