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Artificial seaweed made of plastic has been placed on a [#permalink]
01 Apr 2004, 07:19
67% (02:11) correct
33% (00:00) wrong based on 2 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
(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
(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
(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.
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. _________________
Last edited by Paul on 03 Apr 2004, 22:51, edited 1 time in total.