|
Author |
Message |
|
TAGS:
|
|
|
SVP
Joined: 14 Dec 2004
Posts: 1714
Followers: 1
Kudos [?]:
17
[0], given: 0
|
One of the more reliable methods of determining regional [#permalink]
 29 Jan 2006, 11:34
Question Stats:
0% (00:00) correct
 0% (00:00) wrong based on 0 sessions
One of the more reliable methods of determining regional climatic conditions in prehistoric periods is to examine plant pollen trapped in glacial ice during ancient times. By comparing such pollen samples with spores taken from modern vegetation, scientists can figure out approximately what the weather was like at the time of pollen deposition. Furthermore, by submitting the prehistoric samples to radiocarbon dating techniques, we can also determine when certain climatic conditions were prevalent in that portion of the globe.
Which one of the following may be inferred from the information in the passage?
(A) The earth has undergone several glacial periods.
(B) Radiocarbon dating can be corroborated by glacial evidence.
(C) Similarities between prehistoric and contemporary climates do not exist.
(D) Pollen deposition is a fairly continuous process.
(E) Certain flora are reliably associated with particular climatic conditions
|
|
|
|
|
|
|
VP
Joined: 21 Sep 2003
Posts: 1079
Location: USA
Followers: 2
Kudos [?]:
17
[0], given: 0
|
Is it E?
If they can derive the climate conditions from the pollen trapped in Finland by comparing with the pollen from Antartica, at least it must be true that the pollen are associated with that climate.
_________________
"To dream anything that you want to dream, that is the beauty of the human mind. To do anything that you want to do, that is the strength of the human will. To trust yourself, to test your limits, that is the courage to succeed."
- Bernard Edmonds
|
|
|
|
|
|
Director
Joined: 17 Dec 2005
Posts: 559
Location: Germany
Followers: 1
Kudos [?]:
1
[0], given: 0
|
E is best, agree with you
|
|
|
|
|
|
Director
Joined: 04 Oct 2005
Posts: 587
Location: Chicago
Followers: 1
Kudos [?]:
5
[0], given: 0
|
D looks good to me..
If pollen disposition is not a continuous process and say it happens only in autumn then how would scientists determine about the other weather conditions.
|
|
|
|
|
|
Intern
Joined: 14 Jan 2006
Posts: 23
Followers: 0
Kudos [?]:
0
[0], given: 0
|
'D'
agree with Andy
|
|
|
|
|
|
Intern
Joined: 24 Jan 2006
Posts: 10
Location: Texas
Followers: 0
Kudos [?]:
0
[0], given: 0
|
I'm going with (E), since the whole discussion is irrelevant if (E) is not true. (D) has validity, but I believe that it requires reading into the question too much.
I choose (E).
_________________
Try rereading my posts with a British accent.
|
|
|
|
|
|
Director
Joined: 26 Sep 2005
Posts: 588
Location: Munich,Germany
Followers: 1
Kudos [?]:
7
[0], given: 0
|
andy_gr8 wrote: D looks good to me..
If pollen disposition is not a continuous process and say it happens only in autumn then how would scientists determine about the other weather conditions.
same reasoning, D.
|
|
|
|
|
|
SVP
Joined: 14 Dec 2004
Posts: 1714
Followers: 1
Kudos [?]:
17
[0], given: 0
|
This is one of those tough CRs,
The OA is "E"
|
|
|
|
|
|
Current Student
Joined: 29 Jan 2005
Posts: 5289
Followers: 17
Kudos [?]:
90
[0], given: 0
|
D distorts the evidence in the passage. Regardless of whether or not pollen distribution is a continuous process, it is the "density" of the pollen trapped at the time which gives researchers a solid basis of comparison.
(E) is best because it is a logical statement backed up by the passage. Clearly, only the hardiest and most resilient plants could survive during a global ice age. Can`t imagine palm trees flourishing 14,000 years ago.
Great CR Vivek. Source?
|
|
|
|
|
|
VP
Joined: 20 Sep 2005
Posts: 1023
Followers: 3
Kudos [?]:
23
[0], given: 0
|
Picked E.
|
|
|
|
|
|
SVP
Joined: 14 Dec 2004
Posts: 1714
Followers: 1
Kudos [?]:
17
[0], given: 0
|
GMATT73 wrote: Great CR Vivek. Source?
Matt,
This is from 1000CRs. 
|
|
|
|
|
|
Senior Manager
Joined: 11 Jan 2006
Posts: 277
Location: Chennai,India
Followers: 1
Kudos [?]:
3
[0], given: 0
|
picked D , should have read more carefully.. nice one Vivek!
_________________
vazlkaiye porkalam vazltuthan parkanum.... porkalam maralam porkalthan maruma
|
|
|
|
|
|
Director
Joined: 04 Jan 2006
Posts: 928
Followers: 1
Kudos [?]:
9
[0], given: 0
|
How do you know what Flora is? Thats why i was confused about this question..
can we assume flora is a type of plant?
|
|
|
|
|
|
Senior Manager
Joined: 22 Nov 2005
Posts: 483
Followers: 1
Kudos [?]:
3
[0], given: 0
|
willget800 wrote: How do you know what Flora is? Thats why i was confused about this question..
can we assume flora is a type of plant?
flora
Plants considered as a group, especially the plants of a particular country, region, or time.
This is the dictionary meaning of flora.
|
|
|
|
|
|
SVP
Joined: 30 Mar 2006
Posts: 1744
Followers: 1
Kudos [?]:
12
[0], given: 0
|
Will go with E.
Close call between D and E but there is no mention of the pollen formation process.
The author mentions that pollen trapped in galcial ice can be used to know the climatic conditions. If pollen was a continous process how will you determine which climate it is denoting.
Whereas specific plants give out pollen in certain climatic conditions.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Moderators:
metallicafan, rajeevrks27, souvik101990, PTK, MacFauz, noboru, kissthegmat, carcass, willigetmylifeback, mikemcgarry, doe007, Vercules, Legendaddy, tuanquang269, RaviChandra, Marcab, Narenn
|
close
