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Displays of the aurora borealis, or "northern

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Displays of the aurora borealis, or "northern [#permalink] New post 27 Oct 2010, 01:59
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A
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E

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Displays of the aurora borealis, or "northern lights", can heat the atmosphere over the arctic enough to affect the trajectories of ballistic missiles , induce electric currents that can cause blackouts in some areas and corrosion in north-south pipelines.

A.to affect the trajectories of ballistic missiles,induce
B. that the trajectories of ballistic missiles are affected,induce
C. that it affects the trajectories of ballistic missiles are affected and induces
D.that the trajectories of ballistic missiles are affected and induces
E. to affect the trajectories of ballistic missiles and induce

Now i dunno who to decide between A and E, Can someone help?
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Re: Northern light [#permalink] New post 27 Oct 2010, 05:14
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The displays can heat the atmosphere to do two things. 1. to affect the trajectories blah, blah and 2. ( to) induce electric currents blah blah . So an – and - is required between - missiles - induce - to complete the series with proper parallelism.


E is the correct answer.

Last edited by daagh on 04 Apr 2011, 08:12, edited 3 times in total.
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Re: Northern light [#permalink] New post 27 Oct 2010, 05:37
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in A you have run-on sentence, (comma splice).
Use and to join two independent clauses.
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Re: Northern light [#permalink] New post 27 Oct 2010, 08:30
E
[enough to..] and [the northern lights heat and induce]
A implies that the missile induce[s] no
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Re: Northern light [#permalink] New post 27 Oct 2010, 21:28
E

A is a run on sentence. you need a conjunction before induce.
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Re: Displays of the aurora borealis, or "northern [#permalink] New post 04 Jan 2012, 08:58
Can someone provide a choice by choice break down why each one is wrong?
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Re: Displays of the aurora borealis, or "northern [#permalink] New post 04 Jan 2012, 12:27
+1 E

"enough to" is the idiom. B, C, and D out.
There are two effects of these northern lights: affecting the trajectories of ballistic missiles AND inducing electric currents. AND is needed. E is the answer.
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Re: Displays of the aurora borealis, or "northern [#permalink] New post 04 Jan 2012, 23:37
E. to induce is also correct but not given. || ism.
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Re: Northern light [#permalink] New post 27 Sep 2012, 03:24
Lvnguyen87 wrote:
E
[enough to..] and [the northern lights heat and induce]
A implies that the missile induce[s] no


I chose A

I assumed "can heat the atmosphere over the arctic enough to affect the trajectories of ballistic missiles" to be a modifier modifying Aurora lights. Why is this wrong? So I read the question as "Displays of the aurora borealis, BLAH BLAH BLAH (modifier) , induce electric currents that can cause blackouts in some areas and corrosion in north-south pipelines.

So 'Displays' is plural and goes with 'induce' and by virtue of which other answer choices are wrong. What did I miss?
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Re: Northern light [#permalink] New post 29 Sep 2012, 08:09
ace312 wrote:
Lvnguyen87 wrote:
E
[enough to..] and [the northern lights heat and induce]
A implies that the missile induce[s] no


I chose A

I assumed "can heat the atmosphere over the arctic enough to affect the trajectories of ballistic missiles" to be a modifier modifying Aurora lights. Why is this wrong? So I read the question as "Displays of the aurora borealis, BLAH BLAH BLAH (modifier) , induce electric currents that can cause blackouts in some areas and corrosion in north-south pipelines.

So 'Displays' is plural and goes with 'induce' and by virtue of which other answer choices are wrong. What did I miss?


Hi ace312, I don't think "can heat the atmosphere over the arctic enough to affect the trajectories of ballistic missiles" is modifying Aurora lights. Consider below example (I just made up),

Sunlight from sun, can heat earth's surface - here Sunlight is heating earth's surface, not sun, the same way Displays are heating atmosphere, not the aurora borealis in the below example. Hope this clears your doubt or reply if you have more questions.

student26 wrote:
Displays of the aurora borealis, or "northern lights", can heat the atmosphere over the arctic enough to affect the trajectories of ballistic missiles , induce electric currents that can cause blackouts in some areas and corrosion in north-south pipelines.

A.to affect the trajectories of ballistic missiles,induce
B. that the trajectories of ballistic missiles are affected,induce
C. that it affects the trajectories of ballistic missiles are affected and induces
D.that the trajectories of ballistic missiles are affected and induces
E. to affect the trajectories of ballistic missiles and induce

Now i dunno who to decide between A and E, Can someone help?
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Re: Northern light [#permalink] New post 01 Oct 2012, 09:26
daagh wrote:
The displays can heat the atmosphere to do two things. 1. to affect the trajectories blah, blah and 2. ( to) induce electric currents blah blah . So an – and - is required between - missiles - induce - to complete the series with proper parallelism.


E is the correct answer.


If the sentence uses "inducing" after comma in option A, will it be considered right?
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Re: Displays of the aurora borealis, or "northern [#permalink] New post 27 Feb 2013, 15:34
Damn!! GMAT is a tricky test. The point is that we should never ever underestimate the need to read and understand the sentence!
I choose A because the sentence was correct and parallel. Then when i saw the OA i realized
" induce electric currents that can cause X (blackouts in some areas) and Y (corrosion in north-south pipelines)" need and before it to make it parallel with the first part .
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Re: Displays of the aurora borealis, or "northern   [#permalink] 27 Feb 2013, 15:34
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