GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 18 Oct 2018, 02:26

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

The Bering Land Bridge, or Beringia, emerged in the

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

Hide Tags

Manager
Manager
User avatar
Joined: 05 Jul 2011
Posts: 55
The Bering Land Bridge, or Beringia, emerged in the  [#permalink]

Show Tags

New post 06 Jul 2011, 13:51
Question 1
00:00
A
B
C
D
E

based on 30 sessions

65% (03:20) correct 35% (01:29) wrong

HideShow timer Statistics

The Bering Land Bridge, or Beringia, emerged in the Bering and Chukchi Seas following a gradual drop in sea level during the Quaternary period (the last 2 million years). About 20,000 years ago the land bridge extended from Unalaska Island of the Aleutian chain on the southeast, and from near the mouth of the Mackenzie River of Canada on the east to near the Kolyma and Indigirka rivers of eastern Siberia on the west, and northwestward to Cape Olyutorsky of the Koryak area north of the Kamchatka Peninsula.

Archaeologists believe that the first humans to penetrate North America used this bridge, migrating from northeast Asia to northwestern Canada. This migration probably occurred during the last major phase of the Wisconsin glaciation, a period that began approximately 30,000 years ago and lasted approximately 20,000 years. As this period ended, the two continents were separated as major continental ice sheets and other glaciers melted and caused the sea level to rise again. When the bridge existed, much of the area was not glaciated; it supported Arctic vegetation, particularly tundra, dry grasslands, marsh vegetation, and boreal forests. These plants supplied ample food for grazing animals, including horses, reindeer, and such Ice Age species as mammoths, mastodons, and woolly rhinoceros. The presence of fish and bird fossils points to the possibility that Beringia could have supported human communities.
The author’s argument in the second paragraph would be most supported by the discovery of
A) a 20,000-year-old, undersized mammoth skeleton on the Kamchatka Peninsula
B) 18,000-year-old cave drawings depicting humans and animals near the Mackenzie River
C) fossilized vegetation at Cape Olyutorsky that may have been part of the mammoth’s diet
D) a 35,000-year-old reindeer skeleton near the Kolyma River
E) similar 20,000-year-old human skeletons on Unalaska Island and at Cape Olyutorsky




Am stumped yet again.. Please help with explanation. :help2

:boom

_________________

---Winners do it differently---

Manager
Manager
User avatar
Joined: 29 Jun 2011
Posts: 64
Re: Tough RC Specific question  [#permalink]

Show Tags

New post 06 Jul 2011, 15:04
dude! where does the second para start? :-D
_________________

It matters not how strait the gate,
How charged with punishments the scroll,
I am the master of my fate :
I am the captain of my soul.
~ William Ernest Henley

Manager
Manager
User avatar
Joined: 05 Jul 2011
Posts: 55
Re: Tough RC Specific question  [#permalink]

Show Tags

New post 07 Jul 2011, 03:57
It starts from Line #15
Archaeologists believe that the first
humans to penetrate North America...
_________________

---Winners do it differently---

Manager
Manager
avatar
Joined: 02 Mar 2011
Posts: 68
Re: Tough RC Specific question  [#permalink]

Show Tags

New post 08 Jul 2011, 00:35
the authors argument is second para is "migration probably occurred during
the last major phase of the Wisconsin
glaciation, a period that began
approximately 30,000 years ago and
lasted approximately 20,000 years."

so we need some proof of human presence in the area and it should be around 20000 years old.
B and E look good.
i chose E because human fossil is much stronger proof than cave drawings.
can you provide the OE please?
Manager
Manager
User avatar
Joined: 05 Jul 2011
Posts: 55
Re: Tough RC Specific question  [#permalink]

Show Tags

New post 08 Jul 2011, 10:06
last major phase of the Wisconsin
glaciation, a period that began
approximately 30,000 years ago and
lasted approximately 20,000 years...
That means it ended some 10000 years ago, and the last major phase (with no info about the length) should be something between 10000 and 20000 yrs ago.. and so i had selected B.. as it was 18000 yrs ago.. bt it says its E... how is E stronger or B weaker?
_________________

---Winners do it differently---

Manager
Manager
avatar
Joined: 02 Mar 2011
Posts: 68
Re: Tough RC Specific question  [#permalink]

Show Tags

New post 09 Jul 2011, 23:59
1
the claim is "migration occured from northeast Asia to northwestern Canada during last phase of ...."
now E says similar looking human fossils were discovered at Unalaska Island(northwestern Canada) and at Cape Olyutorsky(northeast Asia)
this shows that migration probably occured. im using the word probably because for this theory to be true i have to assume that original inhabitants and migrants had different skeletal structure.

B just talks about discovery of cave paintings,which could have been drawn by original human inhabitants living near makenzie river.
Manager
Manager
User avatar
Joined: 05 Jul 2011
Posts: 55
Re: Tough RC Specific question  [#permalink]

Show Tags

New post 11 Jul 2011, 04:02
d3thknell wrote:
B just talks about discovery of cave paintings,which could have been drawn by original human inhabitants living near makenzie river.


Agreed. That makes sense. I was more confused about the time line.. if it's clearly mentioned that it happened in the last major phase, it should be less than 20000 yrs ago... (the process started 30000 yrs ago and went on for 20000 yrs).. I know that's not a sound reasoning as far as GMAT is concerned :P I am assuming the last major phase to start at least after the middle of the period.
_________________

---Winners do it differently---

Senior Manager
Senior Manager
avatar
Joined: 12 Mar 2010
Posts: 291
Concentration: Marketing, Entrepreneurship
GMAT 1: 680 Q49 V34
Re: Tough RC Specific question  [#permalink]

Show Tags

New post 16 Jul 2011, 23:13
what is the OA and the reason?
Intern
Intern
avatar
Joined: 20 Jan 2013
Posts: 2
Concentration: Finance, Technology
GMAT Date: 04-02-2013
Re: The Bering Land Bridge, or Beringia, emerged in the  [#permalink]

Show Tags

New post 07 Jun 2013, 22:21
I'll go with E..

Human evidences are more strong... :P :P :P
Retired Moderator
User avatar
Joined: 19 Apr 2013
Posts: 605
Concentration: Strategy, Healthcare
Schools: Sloan '18 (A)
GMAT 1: 730 Q48 V41
GPA: 4
GMAT ToolKit User Premium Member
Re: The Bering Land Bridge, or Beringia, emerged in the  [#permalink]

Show Tags

New post 04 Apr 2015, 11:00
The only reasonable answer seems E.
_________________

If my post was helpful, press Kudos. If not, then just press Kudos !!!

Non-Human User
User avatar
Joined: 01 Oct 2013
Posts: 3199
Premium Member
Re: The Bering Land Bridge, or Beringia, emerged in the  [#permalink]

Show Tags

New post 19 Sep 2018, 04:46
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.
_________________

-
April 2018: New Forum dedicated to Verbal Strategies, Guides, and Resources

GMAT Club Bot
Re: The Bering Land Bridge, or Beringia, emerged in the &nbs [#permalink] 19 Sep 2018, 04:46
Display posts from previous: Sort by

The Bering Land Bridge, or Beringia, emerged in the

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


Copyright

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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.