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At ground level, ozone is a harmful pollutant, but in the

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At ground level, ozone is a harmful pollutant, but in the [#permalink] New post 05 Jan 2006, 23:39
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B
C
D
E

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At ground level, ozone is a harmful pollutant, but in the stratosphere it shields the Earth from the most biologically harmful radiation emitted by the Sun, radiation in the ultraviolet band of the spectrum.

A. in the stratosphere

B. in the stratosphere, in which

C. it is in the stratosphere in which

D. in the stratosphere where

E. it is in the stratosphere and


Pls explain your reasoning for answer .........thanks
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 [#permalink] New post 06 Jan 2006, 04:12
Agree 'A' it is.


A. in the stratosphere
>> Best!
"At the gound, it does this but in the stratosphere, it does that"


B. in the stratosphere, in which
>> Creates sentence fragment

C. it is in the stratosphere in which
>> Creates sentence fragment

D. in the stratosphere where
>> Creates sentence fragment

E. it is in the stratosphere and
>> Changes the meaning
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Re: SC-Ozone [#permalink] New post 06 Jan 2006, 07:01
cool_jonny009 wrote:
At ground level, ozone is a harmful pollutant, but in the stratosphere it shields the Earth from the most biologically harmful radiation emitted by the Sun, radiation in the ultraviolet band of the spectrum.

A. in the stratosphere

B. in the stratosphere, in which

C. it is in the stratosphere in which

D. in the stratosphere where

E. it is in the stratosphere and


Pls explain your reasoning for answer .........thanks


A, the explaination is ||ism, At ground level, it is, in the..... it is

here is a hint, if you get stuck on this and don't know where to start, take out B and C because "which" is usually used wrong in most GMAT SC questions. Now you are down to A D and E. E is awkward and wordy, so if you are down to D and A, you got a 50 50, and then ask yourself is "where" neccessary???? nope, go with A, the right answer
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 [#permalink] New post 06 Jan 2006, 08:47
vivek123 wrote:
Agree 'A' it is.


A. in the stratosphere
>> Best!
"At the gound, it does this but in the stratosphere, it does that"


B. in the stratosphere, in which
>> Creates sentence fragment

C. it is in the stratosphere in which
>> Creates sentence fragment

D. in the stratosphere where
>> Creates sentence fragment

E. it is in the stratosphere and
>> Changes the meaning

Vivek,
Yup OA is A.

but i have a doubt.
but in the stratosphere it shields the Earth from the ...most

Why this "it" is not ambigous here as it can refer to stratosphere or ozone.
Agree that B is sentence fragment ..just over looked it :oops: :oops:
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My choice is 'A; [#permalink] New post 06 Jan 2006, 08:54
My choice is 'A'. All other answer choices are either awkward or redundant wih unnecessary words.
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 [#permalink] New post 07 Jan 2006, 05:07
cool_jonny009 wrote:
vivek123 wrote:
Agree 'A' it is.


A. in the stratosphere
>> Best!
"At the gound, it does this but in the stratosphere, it does that"


B. in the stratosphere, in which
>> Creates sentence fragment

C. it is in the stratosphere in which
>> Creates sentence fragment

D. in the stratosphere where
>> Creates sentence fragment

E. it is in the stratosphere and
>> Changes the meaning

Vivek,
Yup OA is A.

but i have a doubt.
but in the stratosphere it shields the Earth from the ...most

Why this "it" is not ambigous here as it can refer to stratosphere or ozone.
Agree that B is sentence fragment ..just over looked it :oops: :oops:


Sorry for the late response cj,

Your doubt is valid, let us substitute both the antecedants & read!

At ground level, ozone is a harmful pollutant, but in the stratosphere stratosphere shields the Earth from the most.......blah.....blah
>> stratosphere in the stratosphere sounds illogical (moreover, stratosphere is an atmosperic layer around the earth!)

At ground level, ozone is a harmful pollutant, but in the stratosphere ozone shields the Earth from the most.......blah.....blah
>> Makes sense, also we have already talked about ozone, in the first part of the sentence, so overall the sentence is doing comparision of ozone at different positions!

Does it help?
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 [#permalink] New post 14 Jan 2006, 07:37
Late, but (A). Don`t worry cooljohnny, your GMAT score will hit the stratosphere!
  [#permalink] 14 Jan 2006, 07:37
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