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A major chemical spill occurred five years ago at Baker s

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A major chemical spill occurred five years ago at Baker s [#permalink] New post 16 Jun 2008, 19:17
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B
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Question Stats:

78% (02:55) correct 22% (02:08) wrong based on 2 sessions
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: CR-chemical spill [#permalink] New post 16 Jun 2008, 19:26
B because it provides an alternative explanation to why there could be more sea turtles returning in 5 years.


goalsnr 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: CR-chemical spill [#permalink] New post 16 Jun 2008, 19:28
B
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Re: CR-chemical spill [#permalink] New post 16 Jun 2008, 19:29
goalsnr 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.



B for me.
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Re: CR-chemical spill [#permalink] New post 16 Jun 2008, 20:03
goalsnr 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.


B for me as it creates an opportunity for the explanation of the increased number of turtles laying eggs and also does not kill the environmentalists prediction
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Re: CR-chemical spill [#permalink] New post 19 Jun 2008, 16:28
OA is B
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Re: A major chemical spill occurred five years ago at Baker s [#permalink] New post 30 Oct 2013, 11:05
goalsnr 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. Th



I'll go for B, since it provides a reason why the number of turtles has increase.
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Re: A major chemical spill occurred five years ago at Baker s [#permalink] New post 15 Aug 2014, 04:12
how B ?
can anyone please explain ?

thank you!
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Re: A major chemical spill occurred five years ago at Baker s [#permalink] New post 15 Aug 2014, 23:17
Hi adymehta29,
Below is my reasoning for B. Initially I also got stumped by B .
Regards.
Conclusion:
environmentalists’ prediction that the world’s Merrick population would decline as a result of the spill has proven unfounded.
Premise:
1. 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.
2. Yet the number of adult female Merricks returning to lay their eggs at Baker’s Beach has actually increased somewhat since five years ago.
Assumption:These turtles are from the same batch that survived 5 years ago on Baker's Beach.
Weakener: What if these are not from that batch.Then that way environmentalist argument wont be broken and hence author conclusion wold be weaken.

Which of the following, if true, most seriously undermines the argument offered in refutation of the environmentalists’ prediction?
B does that.
If Female Merrick sea turtles begin returning to Baker’s Beach to lay their eggs when they are ten years old , then they are not from the same batch. They must be from an earlier batch and hence they were not impacted from the accident on Baker's Beach 5 years ago.
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Re: A major chemical spill occurred five years ago at Baker s [#permalink] New post 16 Aug 2014, 21:00
adymehta29 wrote:
how B ?
can anyone please explain ?

thank you!


Hi adymehta29,

Let me highlight some of the key facts from the prompt first:

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?

Goal:
We need to weaken the argument attempting to disprove environmentalists' claim that the sea turtle population would decline (put that another way: we need to show that the sea turtle population could still be harmed by the spill).

B. Female Merrick sea turtles begin returning to Baker’s Beach to lay their eggs
when they are ten years old.

If the turtles return when they're 10, then we have a scenario that shows that what's happening right now in no way can be used as a measure of the health of the sea turtle population. With this answer the turtles from the year of the spill could have been decimated, but the number of turtles right now could be bigger than ever if what we're seeing right now are those returning after 10 years.

If you'd like some additional follow up let me know. I'd be happy to help.
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Re: A major chemical spill occurred five years ago at Baker s   [#permalink] 16 Aug 2014, 21:00
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