Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

It is currently 22 May 2017, 22:32

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Two decades after the Dead Sea Barrier was built, none of

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

1 KUDOS received
VP
VP
avatar
Status: Final Lap Up!!!
Affiliations: NYK Line
Joined: 21 Sep 2012
Posts: 1084
Location: India
GMAT 1: 410 Q35 V11
GMAT 2: 530 Q44 V20
GMAT 3: 630 Q45 V31
GPA: 3.84
WE: Engineering (Transportation)
Followers: 38

Kudos [?]: 564 [1] , given: 70

Two decades after the Dead Sea Barrier was built, none of [#permalink]

Show Tags

New post 20 Feb 2013, 06:23
1
This post received
KUDOS
2
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

52% (02:56) correct 48% (02:05) wrong based on 403 sessions

HideShow timer Statistics

Two decades after the Dead Sea Barrier was built, none of the eight sea slug types indigenous to the Dead Sea was still growing adequately in the Sea on one side of the barrier. Since the barrier reduced the annual range of salinity (percentage of salt) in the Sea on one side of the barrier from 30% to 6%, scientists have hypothesized that sharply rising salinity must be involved in signaling the indigenous types of slugs to begin the growing cycle.


Which of the following statements, if true, would most strengthen the scientists' theory?
Choices
A
The indigenous sea slug types could still grow only on one side of the barrier, where the yearly salinity range remained 30%.

B
Before the barrier was constructed, the Dead Sea overflowed its shores yearly, creating salt licks that became key feeding spots for the indigenous type of sea slug.

C
Before the barrier was built, the lowest recorded salinity of the Dead Sea was 16%, whereas after the barrier was built, the lowest recorded salinity of the Sea has been 25%.

D
Non-indigenous types of sea slug, introduced into the Dead Sea after the barrier’s construction, started competing with the declining indigenous sea slug types for salt.

E
Of the sea slug types indigenous to the Dead Sea, six are not indigenous to any other sea in the Middle East.

Answer will be posted after discussion!!!

Consider Kudos If my post helps!!!

Archit
[Reveal] Spoiler: OA

Last edited by Archit143 on 21 Feb 2013, 14:06, edited 1 time in total.
Request Expert Reply
If you have any questions
you can ask an expert
New!
Moderator
Moderator
User avatar
S
Joined: 01 Sep 2010
Posts: 3164
Followers: 854

Kudos [?]: 7282 [0], given: 1063

Re: Two decades after the Dead Sea Barrier was built, none [#permalink]

Show Tags

New post 20 Feb 2013, 10:43
VP
VP
avatar
Status: Final Lap Up!!!
Affiliations: NYK Line
Joined: 21 Sep 2012
Posts: 1084
Location: India
GMAT 1: 410 Q35 V11
GMAT 2: 530 Q44 V20
GMAT 3: 630 Q45 V31
GPA: 3.84
WE: Engineering (Transportation)
Followers: 38

Kudos [?]: 564 [0], given: 70

Re: Two decades after the Dead Sea Barrier was built, none [#permalink]

Show Tags

New post 20 Feb 2013, 10:46
Carcass, Can you explain your take......it will really help , if you can explain why not B??????
3 KUDOS received
Moderator
Moderator
User avatar
S
Joined: 01 Sep 2010
Posts: 3164
Followers: 854

Kudos [?]: 7282 [3] , given: 1063

Re: Two decades after the Dead Sea Barrier was built, none [#permalink]

Show Tags

New post 20 Feb 2013, 11:26
3
This post received
KUDOS
1
This post was
BOOKMARKED
As you know, you have to work from wrong to the right answer. now: C d and E are clearly out of scope

B Before the barrier was constructed, the Dead Sea overflowed its shores yearly, creating salt licks that became key feeding spots for the indigenous type of sea slug.

the stimulus says Two decades after the Dead Sea Barrier was built, none of the eight sea slug types indigenous to the Dead Sea was still growing adequately in the Sea on one side of the barrier.

Asd you can see the two things are completely different. The argument is not focused on what is the scenario BEFORE.

A instead says us that one one side the slug doesn't grow due to the salinity lowered by the sea -------> on the OTHER side where this doesn't happen we have the growing of slug.

and this is confirmed thanks to the conslusion : scientists have hypothesized that sharply rising salinity must be involved in signaling the indigenous types of slugs to begin the growing cycle.

whener we sse that something permits the sharply rising salinity we have made stronger the scenario OR something that says : the salinity % is high, fostering the slug's growth

This is the reason why I picked A
_________________

COLLECTION OF QUESTIONS AND RESOURCES
Quant: 1. ALL GMATPrep questions Quant/Verbal 2. Bunuel Signature Collection - The Next Generation 3. Bunuel Signature Collection ALL-IN-ONE WITH SOLUTIONS 4. Veritas Prep Blog PDF Version 5. MGMAT Study Hall Thursdays with Ron Quant Videos
Verbal:1. Verbal question bank and directories by Carcass 2. MGMAT Study Hall Thursdays with Ron Verbal Videos 3. Critical Reasoning_Oldy but goldy question banks 4. Sentence Correction_Oldy but goldy question banks 5. Reading-comprehension_Oldy but goldy question banks

VP
VP
avatar
Status: Final Lap Up!!!
Affiliations: NYK Line
Joined: 21 Sep 2012
Posts: 1084
Location: India
GMAT 1: 410 Q35 V11
GMAT 2: 530 Q44 V20
GMAT 3: 630 Q45 V31
GPA: 3.84
WE: Engineering (Transportation)
Followers: 38

Kudos [?]: 564 [0], given: 70

Re: Two decades after the Dead Sea Barrier was built, none [#permalink]

Show Tags

New post 20 Feb 2013, 11:38
Hi Carcass
What we are concerned is to strengthen that salt is necessary for the growth of indigenous type of slug...hence If an option says that the salinity helped in the growth of slug....than why should be bothered about the fact that this was few years back or today...I do not think that salinity is going to reduce...even if it does we need just to strengthen that salinity from the water that dam is sufficient for the growth of slug...

Archit
Moderator
Moderator
User avatar
S
Joined: 01 Sep 2010
Posts: 3164
Followers: 854

Kudos [?]: 7282 [0], given: 1063

Re: Two decades after the Dead Sea Barrier was built, none [#permalink]

Show Tags

New post 20 Feb 2013, 13:28
1 KUDOS received
VP
VP
avatar
Status: Final Lap Up!!!
Affiliations: NYK Line
Joined: 21 Sep 2012
Posts: 1084
Location: India
GMAT 1: 410 Q35 V11
GMAT 2: 530 Q44 V20
GMAT 3: 630 Q45 V31
GPA: 3.84
WE: Engineering (Transportation)
Followers: 38

Kudos [?]: 564 [1] , given: 70

Re: Two decades after the Dead Sea Barrier was built, none of [#permalink]

Show Tags

New post 21 Feb 2013, 14:07
1
This post received
KUDOS
@carcass
good job....what happened decade ego v/s happening today.....
BTW source is grockit.

Archit
3 KUDOS received
Moderator
Moderator
User avatar
S
Joined: 01 Sep 2010
Posts: 3164
Followers: 854

Kudos [?]: 7282 [3] , given: 1063

Re: Two decades after the Dead Sea Barrier was built, none of [#permalink]

Show Tags

New post 21 Feb 2013, 14:58
3
This post received
KUDOS
3 KUDOS received
Manager
Manager
User avatar
Joined: 07 May 2012
Posts: 75
Location: United States
Followers: 3

Kudos [?]: 152 [3] , given: 23

Re: Two decades after the Dead Sea Barrier was built, none of [#permalink]

Show Tags

New post 08 May 2013, 07:14
3
This post received
KUDOS
Archit143 wrote:
@carcass
good job....what happened decade ego v/s happening today.....
BTW source is grockit.

Archit



I do not think , what distinguishes A from B , as far as correct answer is concerned , is "what happened decade ago v/s happening today" . But rather A is strengthening the scientist's hypothesis whereas B , in a way , weakens it.

Hypothesis : (now that the barrier is built) Sharply rising salinity is needed in order to get the slug types to grow.

A
The indigenous sea slug types could still grow only on one side of the barrier, where the yearly salinity range remained 30%.

Says, on one side where salinity is 30% , they are doing good, indication salinity is what is hampering their growth. So strengthens saying "good we can rise the salinity on the other side too where there is a decrease" , in order to get them to grow again.

B
Before the barrier was constructed, the Dead Sea overflowed its shores yearly, creating salt licks that became key feeding spots for the indigenous type of sea slug.

Now that the barrier is built , there is no overflow of dead sea and hence no salt lick and hence no feeding spot for sea slug . But now the scientist say that increasing the salinity will help regain their growth. It is a bit of a stretch to assume that increasing salinity will lead to salt lick again and hence increase the feeding spot for sea slug.
Since no information/correlation between salt lick and salinity is given in the argument , if we go by the exact info what is given , we can take these to be two different factors. Hence as per B , it says slug needs those salt lick as feeding spots to enhance their growth rate but scientists are planning to achieve this just by increasing the salinity . Hence, at worst, this option weakens and at best , it is irrelevant.

-Jyothi
_________________

Jyothi hosamani

Current Student
User avatar
Joined: 06 Sep 2013
Posts: 2005
Concentration: Finance
Followers: 68

Kudos [?]: 643 [0], given: 355

GMAT ToolKit User
Re: Two decades after the Dead Sea Barrier was built, none of [#permalink]

Show Tags

New post 29 May 2014, 14:24
Stolen question from OG 12

OA is indeed A

Cheers
J
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 01 Oct 2013
Posts: 10365
Followers: 996

Kudos [?]: 223 [0], given: 0

Premium Member
Re: Two decades after the Dead Sea Barrier was built, none of [#permalink]

Show Tags

New post 24 Aug 2015, 08:49
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).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
SVP
SVP
User avatar
G
Joined: 17 Jul 2014
Posts: 2498
Location: United States (IL)
Concentration: Finance, Economics
Schools: Stanford '19 (D)
GMAT 1: 650 Q49 V30
GPA: 3.92
WE: General Management (Transportation)
Followers: 26

Kudos [?]: 340 [0], given: 166

GMAT ToolKit User Premium Member Reviews Badge
Re: Two decades after the Dead Sea Barrier was built, none of [#permalink]

Show Tags

New post 02 Nov 2016, 07:57
to strengthen the argument, we need to show that exactly salinity is at fault for the problem.

A specifically addresses this issue.
Re: Two decades after the Dead Sea Barrier was built, none of   [#permalink] 02 Nov 2016, 07:57
    Similar topics Author Replies Last post
Similar
Topics:
3 Experts publish their posts in the topic A decade after a logging operation in India began cutting down trees carcass 9 18 Feb 2016, 06:53
4 In the past decade, two Motorlux models Lucky2783 10 13 Mar 2017, 07:05
3 After several decades of surging demand, there has been a 10% fall in Qoofi 3 28 Sep 2015, 01:20
5 Experts publish their posts in the topic Politician: After a civil war two decades ago, the Laconian guerrero25 12 04 Sep 2014, 23:29
11 Two decades after the Emerald River Dam was built, none of noboru 12 14 Mar 2017, 14:29
Display posts from previous: Sort by

Two decades after the Dead Sea Barrier was built, none of

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


cron

GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.