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# Migrating European starlings can eat many times their weight

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Intern
Joined: 18 Jun 2011
Posts: 49
Migrating European starlings can eat many times their weight  [#permalink]

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19 Jun 2011, 08:07
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Difficulty:

35% (medium)

Question Stats:

68% (01:53) correct 32% (02:09) wrong based on 358 sessions

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Migrating European starlings can eat many times their weight in crop-damaging insects like beetles and corn borers, helping clear farms of these destructive pests for the thirty or so days until the birds continue on to their next destination. No major crop can grow from seed to a harvest-ready mature plant in just thirty days, however. Synthetic pesticides, on the other hand, can be applied again and again as the crop grows and matures. Thus, for growing major crops, the assistance of the starlings cannot play any part in effective pest control.
Question
The argument is most vulnerable to criticism on the grounds that it fails to:

A)Allow for the possibility that other migratory birds might be equally effective in reducing the population of crop-damaging insects
B)Relate to the fact that some synthetic pesticides are much more effective than others
C)Consider the possibility of combining both of the pest-control methods under discussion
D)Consider that there might be minor crops that do mature in less than 30 days
E)Identify any alternative method of pest control in place of the method it rejects

Source: Grockit
Senior Manager
Status: Prep started for the n-th time
Joined: 29 Aug 2010
Posts: 363

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19 Jun 2011, 08:14
Conclusion : the assistance of the starlings cannot play <b>any<\b> part in effective pest control.

The presence of any makes the conclusion strongly opinionated against the role of migratory birds. C attacks this objection by mentioning that both the pest control methods can work in tandem.

Hence C

Crick
Intern
Joined: 03 Feb 2013
Posts: 7
Re: Migrating European starlings can eat many times their weight  [#permalink]

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05 Feb 2014, 03:23
Why other options are wrong here ?
Intern
Joined: 29 Jan 2013
Posts: 29
Re: Migrating European starlings can eat many times their weight  [#permalink]

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28 Feb 2014, 03:41
guygmat wrote:
Migrating European starlings can eat many times their weight in crop-damaging insects like beetles and corn borers, helping clear farms of these destructive pests for the thirty or so days until the birds continue on to their next destination. No major crop can grow from seed to a harvest-ready mature plant in just thirty days, however. Synthetic pesticides, on the other hand, can be applied again and again as the crop grows and matures. Thus, for growing major crops, the assistance of the starlings cannot play any part in effective pest control.
Question
The argument is most vulnerable to criticism on the grounds that it fails to:

A)Allow for the possibility that other migratory birds might be equally effective in reducing the population of crop-damaging insects
B)Relate to the fact that some synthetic pesticides are much more effective than others
C)Consider the possibility of combining both of the pest-control methods under discussion
D)Consider that there might be minor crops that do mature in less than 30 days
E)Identify any alternative method of pest control in place of the method it rejects

Source: Grockit

I choose the correct option but is it a weaken question???
Intern
Joined: 29 Jan 2013
Posts: 29
Re: Migrating European starlings can eat many times their weight  [#permalink]

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28 Feb 2014, 03:44
piyushmnit wrote:
Why other options are wrong here ?

The question here talks about the points where the argument fail....so the argument just said that starling cannot be used to protect crops but if starling are combined with insects they may help in a major crop harvest to protect them against insects...so the argument here fails to combine that starlings + birds can help a major growing harvest by protecting them from insects

+1 Kudos if that helps
Intern
Joined: 13 May 2014
Posts: 20
GMAT Date: 11-01-2014
Re: Migrating European starlings can eat many times their weight  [#permalink]

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24 Nov 2014, 06:19
Please some one help me understand this one better.
Manager
Joined: 06 Aug 2013
Posts: 65
Re: Migrating European starlings can eat many times their weight  [#permalink]

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10 Jun 2015, 08:40
sagarag wrote:
Please some one help me understand this one better.

if i have understood the argument correctly;

A)Allow for the possibility that other migratory birds might be equally effective in reducing the population of crop-damaging insects: I am not very sure about this one but I rejected this on grounds that this brings in an external factor i.e. other migratory birds.
B)Relate to the fact that some synthetic pesticides are much more effective than others: out of scope; issue is between pesticides and birds, not between pesticides and pesticides.
C)Consider the possibility of combining both of the pest-control methods under discussion: lets say there are crops that grow within this 30 days time, may not be precisely as per the birds' migration but +/- a few days. if we combine this method with the pesticides, it might equally work.
D)Consider that there might be minor crops that do mature in less than 30 days: there might be minor crops that mature in less thn 30 days, but how many of these types of crops are there?? does the farmer grow all crops of these types?? a few crops of these types?? and many more questions liike these; hence incorrect.
E)Identify any alternative method of pest control in place of the method it rejects: he has already identified an alternative method to this, i.e. using pesticides. hence, incorrect.

hope, i could help out. a kudos would be appreciated!!!
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Joined: 01 Oct 2013
Posts: 7311
Re: Migrating European starlings can eat many times their weight  [#permalink]

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27 Jan 2019, 07:57
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Migrating European starlings can eat many times their weight   [#permalink] 27 Jan 2019, 07:57
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