Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 25 Aug 2016, 20:57

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Since pollution-causing human activities can cause an

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

### Hide Tags

Manager
Joined: 21 May 2011
Posts: 239
Followers: 0

Kudos [?]: 178 [1] , given: 8

Since pollution-causing human activities can cause an [#permalink]

### Show Tags

14 Aug 2011, 07:48
1
This post received
KUDOS
4
This post was
BOOKMARKED
00:00

Difficulty:

95% (hard)

Question Stats:

42% (02:09) correct 58% (01:26) wrong based on 272 sessions

### HideShow timer Statistics

Since pollution-causing human activities can cause an increase in average global temperatures, the mild winters in the area could be a result of the high concentration of vehicle exhaust emitted in the region. However, some scientists argue that the mild winters are a result of the increased rate of conversion of commercial areas to industrial areas.

Which of the following, if true, strengthens the scientists' argument?

A) Although commercial property areas tend to emit significantly less pollution than industrial areas, they still emit more than the vehicles in the area on a given day.
B) Most of the people who work in commercial areas drive to work each day.
C) New strict laws in the area require buildings in the industrial areas to reduce their emissions by 60% in the next 5 years.
D) Vehicle exhaust is comprised largely of carbon monoxide, the same pollutant emitted by the industrial areas.
E) In response to consumer demand, exhaust levels per vehicle have steadily decreased in recent years.
[Reveal] Spoiler: OA

Last edited by fluke on 30 Aug 2011, 14:14, edited 1 time in total.
Added the OA per bschool83's suggestion
Director
Status: Prep started for the n-th time
Joined: 29 Aug 2010
Posts: 707
Followers: 5

Kudos [?]: 149 [1] , given: 37

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

14 Aug 2011, 07:56
1
This post received
KUDOS
bschool83 wrote:
Since pollution-causing human activities can cause an increase in average global temperatures, the mild winters in the area could be a result of the high concentration of vehicle exhaust emitted in the region. However, some scientists argue that the mild winters are a result of the increased rate of conversion of commercial areas to industrial areas.

Which of the following, if true, strengthens the scientists' argument?

Although commercial property areas tend to emit significantly less pollution than industrial areas, they still emit more than the vehicles in the area on a given day.
Most of the people who work in commercial areas drive to work each day.
New strict laws in the area require buildings in the industrial areas to reduce their emissions by 60% in the next 5 years.
Vehicle exhaust is comprised largely of carbon monoxide, the same pollutant emitted by the industrial areas.
In response to consumer demand, exhaust levels per vehicle have steadily decreased in recent years.

I will go with A here.

Scientists' Argument: Mild temperatures were caused by replacement of commercial areas with industrial areas

According to A,

Vehicle pollution < Commercial Pollution < Industrial Pollution =>

From scientists' argument, Industrial activity is increasing. Hence the industrial pollution has a greater effect on the temperature.

Crick
Intern
Joined: 03 May 2008
Posts: 11
Followers: 0

Kudos [?]: 2 [0], given: 4

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

14 Aug 2011, 10:12
I think E is the answer.

Conclusion: Commercials, rather than vehicle emission, is the culprit behind the recent mild winter.
A. Although commercial property areas tend to emit significantly less pollution than industrial areas, they still emit more than the vehicles in the area on a given day.
=> commercial have more influence on the changing weather pattern but both commercials and vehicle emission may cause the mild winter so A weakens the argument somehow :D
B.Most of the people who work in commercial areas drive to work each day. => cannot conclude commercials support the arg (if any, it even weaken the arg since more cars ,more emission)
C.New strict laws in the area require buildings in the industrial areas to reduce their emissions by 60% in the next 5 years. the winter is now not in 5 years
D. Vehicle exhaust is comprised largely of carbon monoxide, the same pollutant emitted by the industrial areas.not strengthen
E. In response to consumer demand, exhaust levels per vehicle have steadily decreased in recent years. the correct answer. exhaust levels decrease so it may deny the possibility of alternative cause and hence support the main cause (commercials)
Manager
Joined: 18 Aug 2011
Posts: 60
Followers: 1

Kudos [?]: 30 [0], given: 6

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

20 Aug 2011, 23:35
A

The researchers compare commercial and industrial areas, A is the only answer that features both of them (and compares the pollution level as well)
Manager
Status: Trying hard to give another shot!
Joined: 29 Jun 2010
Posts: 114
GMAT 1: 610 Q45 V29
WE: Information Technology (Computer Software)
Followers: 1

Kudos [?]: 39 [0], given: 50

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

20 Aug 2011, 23:53
i would go with A
_________________

Thanks,
GC24

Please click Kudos ,if my post helped you

Current Student
Joined: 23 Oct 2010
Posts: 386
Location: Azerbaijan
Concentration: Finance
Schools: HEC '15 (A)
GMAT 1: 690 Q47 V38
Followers: 21

Kudos [?]: 282 [0], given: 73

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

21 Aug 2011, 07:41
hm, between A and E ))
but A seems better , because of these words-

Although commercial property areas tend to emit significantly less pollution than industrial areas, they still emit more than the vehicles in the area on a given day. this means that

imho, the main problem of the answer choice E is that it doesnt show us the difference between vehicle pollution rate and commercial pollution rate.
_________________

Happy are those who dream dreams and are ready to pay the price to make them come true

I am still on all gmat forums. msg me if you want to ask me smth

Manager
Joined: 06 Apr 2011
Posts: 77
Location: India
GMAT 1: Q V
Followers: 0

Kudos [?]: 14 [0], given: 22

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

21 Aug 2011, 09:17
i think its A
_________________

Regards,
Asher

Senior Manager
Joined: 16 Feb 2011
Posts: 262
Followers: 4

Kudos [?]: 127 [0], given: 9

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

21 Aug 2011, 23:03
I will go with A here..whtz d OA?
Manager
Joined: 08 Aug 2011
Posts: 203
GPA: 3.5
Followers: 1

Kudos [?]: 13 [0], given: 51

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

22 Aug 2011, 00:43
I will go with E.

Here the need is to strengthen scientists' argu,who believe that more the industrial area and less commercial more will be the pollution as vehicles have already lessen the exhaust levels the culprit has to be the industrial area
Moderator
Joined: 01 Sep 2010
Posts: 2994
Followers: 714

Kudos [?]: 5737 [0], given: 969

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

22 Aug 2011, 06:30
here we need to find something that confirm and strenghtens the conclusion. an high rate..........

A for sure
_________________
Manager
Joined: 17 Feb 2011
Posts: 112
Followers: 1

Kudos [?]: 3 [0], given: 25

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

22 Aug 2011, 20:23
+1 E.
Manager
Status: want to get 720+in GMAT
Joined: 13 Mar 2011
Posts: 55
Followers: 1

Kudos [?]: 28 [0], given: 0

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

24 Aug 2011, 10:40
+1 for A
_________________

Aim 720+

Manager
Status: want to get 720+in GMAT
Joined: 13 Mar 2011
Posts: 55
Followers: 1

Kudos [?]: 28 [0], given: 0

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

24 Aug 2011, 10:40
what is the OA
_________________

Aim 720+

Moderator
Joined: 01 Sep 2010
Posts: 2994
Followers: 714

Kudos [?]: 5737 [0], given: 969

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

25 Aug 2011, 16:35
yup.......OA ??'
_________________
Senior Manager
Joined: 11 May 2011
Posts: 373
Location: US
Followers: 3

Kudos [?]: 89 [0], given: 46

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

25 Aug 2011, 17:37
A from my side.

bschool83 - whats OA?
_________________

-----------------------------------------------------------------------------------------
What you do TODAY is important because you're exchanging a day of your life for it!
-----------------------------------------------------------------------------------------

Manager
Joined: 13 May 2010
Posts: 124
Followers: 0

Kudos [?]: 11 [0], given: 4

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

28 Aug 2011, 05:58
Please post the OA.
Math Forum Moderator
Joined: 20 Dec 2010
Posts: 2021
Followers: 157

Kudos [?]: 1558 [0], given: 376

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

28 Aug 2011, 07:18
bschool83 wrote:
Since pollution-causing human activities can cause an increase in average global temperatures, the mild winters in the area could be a result of the high concentration of vehicle exhaust emitted in the region. However, some scientists argue that the mild winters are a result of the increased rate of conversion of commercial areas to industrial areas.

Which of the following, if true, strengthens the scientists' argument?

A) Although commercial property areas tend to emit significantly less pollution than industrial areas, they still emit more than the vehicles in the area on a given day.
B) Most of the people who work in commercial areas drive to work each day.
C) New strict laws in the area require buildings in the industrial areas to reduce their emissions by 60% in the next 5 years.
D) Vehicle exhaust is comprised largely of carbon monoxide, the same pollutant emitted by the industrial areas.
E) In response to consumer demand, exhaust levels per vehicle have steadily decreased in recent years.

bschool83:
I couldn't find this question in 1000 series. Could you please post the OA?

Or anyone who has seen this question before, could you please post the correct source of the question and OA.

IMO:
Ans: "A"

As nicely explained by Crick:
Pollution by Vehicles < Pollution by Commercial < Pollution by industrial areas.

If we assume Pollution by Vehicles to be constant,
Pollution by Vehicles + Pollution by Commercial < Pollution by Vehicles + Pollution by Industrial Areas

However, if we grade these components as:
Pollution by Vehicles in Commercial Area=100
Pollution by Commercial Area=200
Pollution by Vehicles in Industrial Area=0
Pollution by Industrial Area=250

The above expression fails. So, it all depends on the comparison between inflow of the vehicles between those two areas.

"E" gives a fact that's tempting but it is not good enough for comparison. What if the industries are not emitting pollution at all and the vehicles, despite lowered vehicular exhaust, is contributing to the pollution.

"D" can be ruled out because the volume of gas emitted is not shown. Both emits CO, agree, but what if industries are emitting 1 tonne of CO and the vehicles are emitting 10 tonnes of CO. Moreover, we don't even know what gases are actually in question. It may very well be SO2 that's the prime measuring factor for pollution.

Give and take, A sounds the best because changing a commercial area to an industrial area won't significantly change the number of vehicles in the area or the gas emitted by those vehicles.
_________________
Manager
Joined: 21 May 2011
Posts: 239
Followers: 0

Kudos [?]: 178 [0], given: 8

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

30 Aug 2011, 14:06
A) Although commercial property areas tend to emit significantly less pollution than industrial areas, they still emit more than the vehicles in the area on a given day. STRENGTHEN
B) Most of the people who work in commercial areas drive to work each day. WEAKEN
C) New strict laws in the area require buildings in the industrial areas to reduce their emissions by 60% in the next 5 years. IRRELEVANT
D) Vehicle exhaust is comprised largely of carbon monoxide, the same pollutant emitted by the industrial areas. OUT OF SCOPE
E) In response to consumer demand, exhaust levels per vehicle have steadily decreased in recent years. OUT OF SCOPE
Intern
Joined: 11 Apr 2011
Posts: 31
Followers: 0

Kudos [?]: 0 [0], given: 9

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

08 Sep 2011, 07:26
+1 for A
Manager
Joined: 09 Jun 2011
Posts: 145
Followers: 0

Kudos [?]: 29 [0], given: 1

Re: CR - 700 level - global temperature [#permalink]

### Show Tags

08 Sep 2011, 09:27
+1 forA..Although D tempted me..But as 'fluke' as put, it does not show the amount of pollutants emitted by either group..
Re: CR - 700 level - global temperature   [#permalink] 08 Sep 2011, 09:27

Go to page    1   2    Next  [ 27 posts ]

Similar topics Replies Last post
Similar
Topics:
10 Lyme disease is caused by a bacterium transmitted to humans 11 27 Feb 2012, 11:48
2 Lyme disease is caused by a bacterium transmitted to humans 1 06 Dec 2011, 23:25
10 Lyme disease is caused by a bacterium transmitted to humans 13 16 Oct 2009, 09:44
58 Lyme disease is caused by a bacterium transmitted to humans 71 21 Jul 2009, 22:18
29 Lyme disease is caused by a bacterium transmitted to humans 16 20 Apr 2009, 19:17
Display posts from previous: Sort by

# Since pollution-causing human activities can cause an

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

 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®.