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Scientists studying climate change have found that one of

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Scientists studying climate change have found that one of [#permalink] New post 12 Aug 2013, 13:45
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A
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C
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E

Difficulty:

  75% (hard)

Question Stats:

51% (02:52) correct 49% (01:53) wrong based on 83 sessions
Scientists studying climate change have found that one of the overall effects of global warming is not only a higher planetary temperature, but also a universal change in seasons, specifically earlier springs and later autumns. Though some argue that this is an advantage because it presents a longer summer growing season, others fear that too many animal species will be unable to adapt and will become extinct.

Which of the following is the best piece of evidence to support the conclusion that a longer growing season will hasten the extinction of some animal species?

-Squirrel and chipmunk species are unable either to consume or to store all the nuts and berries produced during a longer growing season.
-Fungus species typically produce spores only once a year and are unable to produce enough spores to release spores again before the end of a longer growing season.
-Butterfly species that respond quickly to changes in temperature hatch caterpillars and undergo metamorphosis into butterflies earlier, flying away before bird species that feed exclusively on them have hatched their young.
-Salmon species that rely on changes in temperature to signal the start of annual migrations leave their freshwater birthplaces earlier, before they have fed sufficiently on freshwater insects to reduce their number.
-Reptile species that hibernate during winter months must emerge from hibernation sooner and spend a longer time searching for food before mating in mid-summer.

Can someone provide a detail explanation and method to deal with such questions?
[Reveal] Spoiler: OA

Last edited by pqhai on 12 Aug 2013, 20:44, edited 1 time in total.
Rename the topic.
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Re: Scientists studying climate change have found that one of [#permalink] New post 12 Aug 2013, 20:55
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ANALYZE THE STIMULUS:

Fact: Scientists studying climate change have found that one of the overall effects of global warming is not only a higher planetary temperature, but also a universal change in seasons, specifically earlier springs and later autumns.
Conclusion: Though some argue that this is an advantage because it presents a longer summer growing season, others fear that too many animal species will be unable to adapt and will become extinct.

ANALYZE EACH ANSWER:

-Squirrel and chipmunk species are unable either to consume or to store all the nuts and berries produced during a longer growing season.
Wrong. A shows the “preferred” condition for Squirrel and chipmunk because they will have more food.

-Fungus species typically produce spores only once a year and are unable to produce enough spores to release spores again before the end of a longer growing season.
Wrong. SHELL GAME. The logic is correct, but Fungus is not animal.

-Butterfly species that respond quickly to changes in temperature hatch caterpillars and undergo metamorphosis into butterflies earlier, flying away before bird species that feed exclusively on them have hatched their young.
CorrectThe early growth of butterfly indirectly leads to the extinction of bird.

-Salmon species that rely on changes in temperature to signal the start of annual migrations leave their freshwater birthplaces earlier, before they have fed sufficiently on freshwater insects to reduce their number.
Wrong. D indicates that Salmons will not reduce their number.

-Reptile species that hibernate during winter months must emerge from hibernation sooner and spend a longer time searching for food before mating in mid-summer.
Wrong. Nothing to indicate that reptile will be extinct. E just tells the fact that Reptiles have to change their searching food habit.

Hope it helps.
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Re: Scientists studying climate change have found that one of [#permalink] New post 13 Aug 2013, 02:03
pqhai wrote:

-Fungus species typically produce spores only once a year and are unable to produce enough spores to release spores again before the end of a longer growing season.
Wrong. SHELL GAME. The logic is correct, but Fungus is not animal.



I got to C pretty easily but wanted to address this. From a scientific perspective, this is right but I think the statement is a poor choice even without that logic. Let's assume Fungus is an animal...all this seems to imply is that they "reproduce" once a year and during the long growing season, there is not enough time for the new offspring to mature in time to reproduce again. (But that doesn't mean the offspring won't produce spores later in time or the following growing season)
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Re: Scientists studying climate change have found that one of [#permalink] New post 13 Aug 2013, 13:20
ProleFeed13 wrote:
pqhai wrote:

-Fungus species typically produce spores only once a year and are unable to produce enough spores to release spores again before the end of a longer growing season.
Wrong. SHELL GAME. The logic is correct, but Fungus is not animal.



I got to C pretty easily but wanted to address this. From a scientific perspective, this is right but I think the statement is a poor choice even without that logic. Let's assume Fungus is an animal...all this seems to imply is that they "reproduce" once a year and during the long growing season, there is not enough time for the new offspring to mature in time to reproduce again. (But that doesn't mean the offspring won't produce spores later in time or the following growing season)


Yes, You're right. There are many ways to eliminate a wrong answers. According to GMAT standards, a wrong answer always has more than one errors. You only need to attack one point to undermine the incorrect answer. One shot is enough :)
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Re: Scientists studying climate change have found that one of [#permalink] New post 13 Aug 2013, 13:43
pqhai wrote:
ProleFeed13 wrote:
pqhai wrote:

-Fungus species typically produce spores only once a year and are unable to produce enough spores to release spores again before the end of a longer growing season.
Wrong. SHELL GAME. The logic is correct, but Fungus is not animal.



I got to C pretty easily but wanted to address this. From a scientific perspective, this is right but I think the statement is a poor choice even without that logic. Let's assume Fungus is an animal...all this seems to imply is that they "reproduce" once a year and during the long growing season, there is not enough time for the new offspring to mature in time to reproduce again. (But that doesn't mean the offspring won't produce spores later in time or the following growing season)


Yes, You're right. There are many ways to eliminate a wrong answers. According to GMAT standards, a wrong answer always has more than one errors. You only need to attack one point to undermine the incorrect answer. One shot is enough :)


Interesting, I didn't know the multiple error aspect; forgive me because I just started my GMAT prep and have focused on math so far. Is it the case that in the verbal section (or CR), you can occasionally rule out choices based on outside knowledge? I thought (or assumed :) ) that you must evaluate arguments based solely on the logic of the information given without regard for the truth or possibility of statements based on outside knowledge. If so, it makes a huge difference as your error can be spotted in about 1 second whereas my error as described takes much more thought to deduce.
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Re: Scientists studying climate change have found that one of [#permalink] New post 13 Aug 2013, 14:55
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ProleFeed13 wrote:

Interesting, I didn't know the multiple error aspect; forgive me because I just started my GMAT prep and have focused on math so far. Is it the case that in the verbal section (or CR), you can occasionally rule out choices based on outside knowledge? I thought (or assumed :) ) that you must evaluate arguments based solely on the logic of the information given without regard for the truth or possibility of statements based on outside knowledge. If so, it makes a huge difference as your error can be spotted in about 1 second whereas my error as described takes much more thought to deduce.


Hi ProleFeed13
I don't think you have just started GMAT :) your logical thinking is very GOOD. The rule of GMAT is never use our outside knowledge to apply to questions, only the logic works. However, it does not mean outside knowledge is NOT important. Some "hard" questions require you to have some backgrounds such as economic, business, science, or even quant .... (only at the beginning level, GMAT never asks you to do complex calculations). Although GMAT focuses on the logic, the outside knowledge (as I mention above) actually is the most logical thing itself. If its' not, it can't be accepted.
Best!
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Re: Scientists studying climate change have found that one of [#permalink] New post 13 Aug 2013, 15:20
pqhai wrote:

Hi ProleFeed13
I don't think you have just started GMAT :) your logical thinking is very GOOD. The rule of GMAT is never use our outside knowledge to apply to questions, only the logic works. However, it does not mean outside knowledge is NOT important. Some "hard" questions require you to have some backgrounds such as economic, business, science, or even quant .... (only at the beginning level, GMAT never asks you to do complex calculations). Although GMAT focuses on the logic, the outside knowledge (as I mention above) actually is the most logical thing itself. If its' not, it can't be accepted.
Best!


Ahh, thanks--makes sense. By the way, I'm a licensed attorney so I should hope so!
Re: Scientists studying climate change have found that one of   [#permalink] 13 Aug 2013, 15:20
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