depleted throughout the last 50 years. Atmospheric ozone : GMAT Critical Reasoning (CR)
Check GMAT Club App Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

It is currently 04 Dec 2016, 12:40
GMAT Club Tests

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

depleted throughout the last 50 years. Atmospheric ozone

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

Hide Tags

Manager
Manager
avatar
Joined: 30 Mar 2007
Posts: 180
Followers: 1

Kudos [?]: 35 [0], given: 0

depleted throughout the last 50 years. Atmospheric ozone [#permalink]

Show Tags

New post 03 Jun 2007, 15:52
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

depleted throughout the last 50 years. Atmospheric ozone blocks UV-B, a type of ultraviolet radiation that is continuously produced by the sun, and which can damage genes. Because amphibians lack hair, hide, or feathers to shield them, they are particularly vulnerable to UV-B radiation. In addition, their gelatinous eggs lack the protection of leathery or hard shells. Thus, the primary cause of the declining amphibian population is the depletion of the ozone layer.

Each of the following, if true, would strengthen the argument EXCEPT:

(A) Of the various types of radiation blocked by atmospheric ozone, UV-B is the only type that can damage genes.

(B) Amphibian populations are declining far more rapidly than are the populations of nonamphibian species whose tissues and eggs have more natural protection from UV-B.

(C) Atmospheric ozone has been significantly depleted above all the areas of the world in which amphibian populations are declining.

(D) The natural habitat of amphibians has not become smaller over the past century.

(E) Amphibian populations have declined continuously for the last 50 years

OA is A...but wouldn't D be correct? if the habitate has been maintained over the years, then it goes against the argument in the passage that the population is declining.
Request Expert Reply
If you have any questions
you can ask an expert
New!
Senior Manager
Senior Manager
User avatar
Joined: 04 Nov 2006
Posts: 268
Location: California
Followers: 1

Kudos [?]: 189 [0], given: 0

 [#permalink]

Show Tags

New post 03 Jun 2007, 18:39
A is correct as it talks about Genes affected by UV-B, which is not a problem to amphibians as per the passage..

D however suggests if the habitat is not reduced, clearly the UV-B should be responsible for the reduction in the number of amphibians...
  [#permalink] 03 Jun 2007, 18:39
    Similar topics Author Replies Last post
Similar
Topics:
6 Throughout much of its fifty-year history, anceer 5 11 Jul 2014, 05:22
28 Experts publish their posts in the topic The popular view is that Ozone layer’s depletion-"Tough one" egmat 46 03 Feb 2013, 20:18
44 Experts publish their posts in the topic In the past 50 years, the population of honeybees in the nelz007 67 14 Nov 2012, 05:31
Atmosphere... acer2knight 7 25 Jun 2009, 23:50
Corporate Officer: Last year was an unusually poor one for AugiTh 7 19 Jul 2007, 11:52
Display posts from previous: Sort by

depleted throughout the last 50 years. Atmospheric ozone

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


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®.