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According to some botanists, invasive plants are the second

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According to some botanists, invasive plants are the second [#permalink] New post 16 Oct 2006, 20:01
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83% (01:49) correct 17% (00:46) wrong based on 129 sessions
According to some botanists, invasive plants are the second most serious threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems.

A. threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems
A. threat, after habitat loss, to native species of plants and animals and for maintaining biologically diverse ecosystems
A. threat, after losing their habitat, to native species of plants and animals and also to maintenance of biologically diverse ecosystems
A. threat to native species of plants and animals and for maintaining biologically diverse ecosystems, after habitat loss
A. threat to native species of plants and animals as well as to maintaining biologically diverse ecosystems, after losing their habitat
[Reveal] Spoiler: OA

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Re: According to some botanists, invasive plants are the second [#permalink] New post 08 Feb 2014, 17:10
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First look: Parallelism, diction, grammatical construction (and)

A. threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems OK - It's parallel and logical. But, "to the maintenance of..." seems wordy, so I wanted to see if there was a better choice first.

B. threat, after habitat loss, to native species of plants and animals and for maintaining biologically diverse ecosystems Wrong - "threat to" is the correct idiom, while "threat for" has a connotation that the threat came from "maintaining..."

C. threat, after losing their habitat, to native species of plants and animals and also to maintenance of biologically diverse ecosystems Wrong - There is no clear referent for "their." "And also" is redundant.

D. threat to native species of plants and animals and for maintaining biologically diverse ecosystems, after habitat loss Wrong - "threat to" is the correct idiom.

E. threat to native species of plants and animals as well as to maintaining biologically diverse ecosystems, after losing their habitat Wrong - "To maintaining" is not valid infinitive construction.

IMO A
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Re: According to some botanists, invasive plants are the second [#permalink] New post 24 Feb 2013, 07:36
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According to some botanists, invasive plants are the second most serious threat, after habitat loss,
to native species of plants and animals and to the maintenance of biologically diverse ecosystems.


A. threat, after habitat loss, to native species of plants and animals and to the maintenance of
biologically diverse ecosystems

B. threat, after habitat loss, to native species of plants and animals and for maintaining biologically
diverse ecosystems -> parallelism issue

C. threat, after losing their habitat, to native species of plants and animals and also to maintenance
of biologically diverse ecosystems-> the first threat is habitat loss , second is invasive plants; after losing changes meaning


D. threat to native species of plants and animals and for maintaining biologically diverse
ecosystems, after habitat loss-> threat to - for maintaining not parallel

E. threat to native species of plants and animals as well as to maintaining biologically diverse
ecosystems, after losing their habitat -> to maintain is correct


so ans: A
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Re: According to some botanists, invasive plants are the second [#permalink] New post 17 Oct 2006, 02:19
It has to be a A since all the options are marked A! :lol:
Ok, now for the reasoning
B, D and E are not parallel
C has the ambigous 'their'
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Re: According to some botanists, invasive plants are the second [#permalink] New post 17 Oct 2006, 08:40
No perfect choice. Use of threat...for elliminates B,D. C is just not right.
A vs E. I'd eliminate E. So A.
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Re: According to some botanists, invasive plants are the second [#permalink] New post 17 Oct 2006, 18:31
OA is A =)
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Re: According to some botanists, invasive plants are the second [#permalink] New post 08 Feb 2014, 17:15
BukrsGmat wrote:
E. threat to native species of plants and animals as well as to maintaining biologically diverse
ecosystems, after losing their habitat -> to maintain is correct

so ans: A


"To maintain" is an infinitive, but parallelism requires a noun "to the maintenance..." I'm sure you wrote that by mistake.
In case others were confused at first too, I hope this helps.
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Re: According to some botanists, invasive plants are the second [#permalink] New post 08 Feb 2014, 22:20
According to some botanists, invasive plants are the second most serious threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems.

INCORRECT PORTIONS HIGHLIGHTED.....

A. threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems.....CORRECT
A. threat, after habitat loss, to native species of plants and animals andfor maintaining biologically diverse ecosystems
A. threat, after losing their habitat, to native species of plants and animals and also to maintenance of biologically diverse ecosystems
A. threatto native species of plants and animals and for maintainingbiologically diverse ecosystems, after habitat loss
A. threat to native species of plants and animals as well as to maintaining biologically diverse ecosystems,after losing their habitat
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Re: According to some botanists, invasive plants are the second [#permalink] New post 18 Apr 2015, 19:12
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).

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Re: According to some botanists, invasive plants are the second [#permalink] New post 18 Apr 2015, 21:59
A is the best answer as it preserves parallelism and also avoids ambiguous pronouns.
Re: According to some botanists, invasive plants are the second   [#permalink] 18 Apr 2015, 21:59
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