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Turtles and Bakers beach

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Manager
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Re: Turtles and Bakers beach [#permalink] New post 04 Feb 2009, 00:30
My bad, I cannot put forward what I mean.
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Re: Turtles and Bakers beach [#permalink] New post 04 Feb 2009, 07:51
Can we have the OA/OE pls?

Cheers,
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Re: Turtles and Bakers beach [#permalink] New post 04 Feb 2009, 08:11
Guys

The OA is B. I do not have an OE.
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Re: Turtles and Bakers beach [#permalink] New post 04 Feb 2009, 10:15
In such type of questions, it is very important to understand wht does the stem ask for. Here there are two negatives:
1. Environmentalists predict population will decrease as a result of spillage.
2. refutation that their prediction is wrong
we have 2 again undermine 2
Environmentalists can defend by taking a stand in B
B says female turtles come to hatch eggs after they are ten years old. That means 5 years ago, when the spillage occured they were not present. HAd they been present, the spillage would have definitely affected them. So
icandy wrote:
A major chemical spill occurred five years ago at Baker’s Beach, the world’s sole nesting
ground for Merrick sea turtles, and prevented nearly all the eggs laid that year from
hatching. Yet the number of adult female Merricks returning to lay their eggs at Baker’s
Beach has actually increased somewhat since five years ago. Clearly, environmentalists’
prediction that the world’s Merrick population would decline as a result of the spill has
proven unfounded.
Which of the following, if true, most seriously undermines the argument offered in
refutation of the environmentalists’ prediction?
A. The chemical spill five years ago occurred at a time when there were neither
Merrick sea turtles nor Merrick sea turtle eggs on Baker’s Beach.
B. Female Merrick sea turtles begin returning to Baker’s Beach to lay their eggs
when they are ten years old.
C. Under normal conditions, only a small proportion of hatchling female Merrick sea
turtles survive in the ocean until adulthood and return to lay their eggs at Baker’s
Beach.
D. Environmental pressures unrelated to the chemical spill have caused a significant
decline in the population of one of the several species of sea birds that prey on
Merrick sea turtle eggs.
E. After the chemical spill, an environmental group rejected a proposal to increase
the Merrick sea turtle population by transferring eggs from Baker’s Beach to
nearby beaches that had not been affected by the spill.
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Re: Turtles and Bakers beach [#permalink] New post 04 Feb 2009, 10:16
I picked B too for the following reason.

Environmentalists' prediction is that the world’s Merrick population would decline as a result of the chemical spill.

The question essentially asks which of the options supports this prediction under the condition described in the argument.

Option B says that Female Merrick lay eggs when they are 10 years old. Thus, an increase in FM returning to Baker's Beach does not damage the prediction. Instead, the prediction would come into effect another five years down the line.
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Re: Turtles and Bakers beach [#permalink] New post 04 Feb 2009, 13:42
ritula wrote:
In such type of questions, it is very important to understand wht does the stem ask for. Here there are two negatives:
1. Environmentalists predict population will decrease as a result of spillage.
2. refutation that their prediction is wrong
we have 2 again undermine 2
Environmentalists can defend by taking a stand in B
B says female turtles come to hatch eggs after they are ten years old. That means 5 years ago, when the spillage occured they were not present. HAd they been present, the spillage would have definitely affected them. So
]


I agree with you partly. What makes you think that there were not any 10 year old turtles 5 years ago? You seem to say that lets start at 0(the number of turtles) 10 years ago. Am I missing some thing?
Manager
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Re: Turtles and Bakers beach [#permalink] New post 04 Feb 2009, 22:10
OK I will try again.
I am posting similar Qs.
First one, 11-t75438 .....
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Re: Turtles and Bakers beach [#permalink] New post 04 Feb 2009, 22:49
Atleast we can say that not all were present. So those who came 5 years later after the spillage did contribute to the increase in population.
icandy wrote:
ritula wrote:
In such type of questions, it is very important to understand wht does the stem ask for. Here there are two negatives:
1. Environmentalists predict population will decrease as a result of spillage.
2. refutation that their prediction is wrong
we have 2 again undermine 2
Environmentalists can defend by taking a stand in B
B says female turtles come to hatch eggs after they are ten years old. That means 5 years ago, when the spillage occured they were not present. HAd they been present, the spillage would have definitely affected them. So
]


I agree with you partly. What makes you think that there were not any 10 year old turtles 5 years ago? You seem to say that lets start at 0(the number of turtles) 10 years ago. Am I missing some thing?
Re: Turtles and Bakers beach   [#permalink] 04 Feb 2009, 22:49
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