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Mature white pines intercept almost all the sunlight that

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Senior Manager
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Mature white pines intercept almost all the sunlight that  [#permalink]

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New post 09 Dec 2003, 17:30
1
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

45% (02:07) correct 55% (02:33) wrong based on 28 sessions

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Mature white pines intercept almost all the sunlight that shines on them. They leave a deep litter that dries readily, and they grow to prodigious height so that, even when there are large gaps in a stand of such trees, little light reaches the forest floor. For this reason white pines cannot regenerate in their own shade. Thus, when in a dense forest a stand of trees consists of nothing but mature white pines, it is a fair bet that ____.

Which one of the following most logically concludes the argument?

(A) the ages of the trees in the stand do not differ from each other by much more than the length of time it takes a white pine to grow to maturity

(B) the land on which the stand is now growing had been cleared of all trees at the time when the first of the white pines started growing

(C) competition among the trees in the stand for sunlight will soon result in some trees' dying and the stand thus becoming thinner

(D) other species of trees will soon begin to colonize the stand, eventually replacing all of the white pines

(E) any differences in the heights of the trees in the stand are attributable solely to differences in the ages of the trees

:roll:
Director
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Re: Mature white pines intercept almost all the sunlight that  [#permalink]

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New post 09 Dec 2003, 18:27
author states that '..white pines can't regenerate in their own shade..' so, the growers must have cleared that land before sowing...or whatever.

B

sunniboy,
indeed your avatar is distracting :)
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Re: Mature white pines intercept almost all the sunlight that  [#permalink]

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New post 09 Dec 2003, 19:10
A, I reckon.

it says mature white pines intercept almost all the sunlight, so what you cannot have are immature trees-- since they will have no available light. As the question states "white pines cannot regenerate in their own
shade"
Hence, the trees must have "grown up" at the same time.
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Re: Mature white pines intercept almost all the sunlight that  [#permalink]

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New post 09 Dec 2003, 20:05
stoolfi wrote:
A, I reckon.

it says mature white pines intercept almost all the sunlight, so what you cannot have are immature trees-- since they will have no available light. As the question states "white pines cannot regenerate in their own
shade"
Hence, the trees must have "grown up" at the same time.


well..well, these questions are really messy.. :roll:
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Re: Mature white pines intercept almost all the sunlight that  [#permalink]

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New post 10 Dec 2003, 00:07
B and E are too strong, using such quantifies as ANY and ALL.
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Re: Mature white pines intercept almost all the sunlight that  [#permalink]

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New post 10 Dec 2003, 01:45
its C....coz
A and E are out coz nothing is discussed abt age in para. B and D
are out of scope.

my 2 cents...
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Re: Mature white pines intercept almost all the sunlight that  [#permalink]

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New post 10 Dec 2003, 04:58
I was thinking about A and B, but now I agree that B sounds too strong :oops:
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Re: Mature white pines intercept almost all the sunlight that  [#permalink]

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New post 10 Dec 2003, 09:04
I agree with A.

B is indeed to strong.
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Re: Mature white pines intercept almost all the sunlight that  [#permalink]

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New post 14 Apr 2016, 03:49
I feel A is aanswer. If some expert could throw light on the reasoning it would be a big help.
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Re: Mature white pines intercept almost all the sunlight that  [#permalink]

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New post 26 Nov 2019, 08:08
OA added and bumping for further discussion
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Re: Mature white pines intercept almost all the sunlight that   [#permalink] 26 Nov 2019, 08:08
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