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# Artificial seaweed made of plastic has been placed on a

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Senior Manager
Joined: 19 Feb 2004
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Location: Lungi
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Artificial seaweed made of plastic has been placed on a [#permalink]

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01 Apr 2004, 07:19
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Question Stats:

67% (02:11) correct 33% (00:00) wrong based on 3 sessions

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Artificial seaweed made of plastic has been placed on a section of
coast in order to reverse beach erosion. The inventor of the seaweed
has concluded that the recent buildup of sand on that section of
coast proves that the artificial seaweed reverse beach erosion.

Which of the following, if true, would most seriously weaken the inventor's
conclusion?

(A) The amount of recent sand buildup on that section of coast was
less than had been predicted on the basis of the results obtained in
controlled experiments.
(B) Because artificial seaweed would be buried eventually by
additional sand deposits on the coast, more artificial seaweed would
need to be put in place every four years.
(C) Artificial seaweed of another material which had been previously
developed by the inventor failed to add sand to coastline in past
trials.
(D) The amount of recent sand buildup on that section of coast is the
same as the amount of recent sand buildup on otherwise very similar
section of coast without artificial seaweed.
(E) The amount of recent sand buildup on that section of coast,
although considerable, is not yet enough to replace the amount lost
during storms on that section of coast in the last twenty years.
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Manager
Joined: 27 Feb 2004
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01 Apr 2004, 15:06
D.....With and without type of question....
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03 Apr 2004, 16:09
I'd also go with D. However, is anyone willing to prove A incorrect?
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Senior Manager
Joined: 19 Feb 2004
Posts: 414
Location: Lungi
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03 Apr 2004, 22:05
yes OA is D.
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03 Apr 2004, 22:43
lvb9th wrote:
I'd also go with D. However, is anyone willing to prove A incorrect?

Despite the fact that the sand buildup was less than expected, it does not totally disprove that artificial seaweeds reverse beach erosion. It still works, albeit at a lesser extent. D on the other hand is much stronger making a direct comparison between that beach and other ones at which place no such artificial seeweeds exist.
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Paul

Last edited by Paul on 03 Apr 2004, 22:51, edited 1 time in total.
03 Apr 2004, 22:43
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# Artificial seaweed made of plastic has been placed on a

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