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Heightened land erosion, caused by human activity, has many

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Re: Heightened land erosion, caused by human activity, has many [#permalink] New post 30 Jan 2012, 12:18
the same question exists in this forum
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Re: Heightened land erosion, caused by human activity, has many [#permalink] New post 04 Jun 2012, 07:22
Guys, OA is A. This sentence is correct as is because all of the items in the list are parallel form. Each of the items is a noun that names a harmful effect of land erosion. The construction of the list is also correct. The noun following, which immediately precedes the list, correctly renames the items in the series.
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Re: Heightened land erosion, caused by human activity, has many [#permalink] New post 29 Jul 2013, 08:17
To anyone still looking for the answer to this problem, it is A.

All sentences must have at least one independent clause (meaning a part of the sentence that is grammatically complete). If you take out the words "the following", then no part of the sentence is complete; you are left with a fragment in the first part and a list in the second.

In B and D, the word "entering" is incorrectly used. To correctly use "entering", the sentence would have to say "the entering of...", but then the meaning would be slightly changed from "the introduction of". If you're having trouble understanding what I mean, try replacing "the introduction of" with "introducing"; it does not work. If "introducing" doesn't work, why should "entering"?

One huge tip for the SC: be careful when using -ing words. They are only verbs when used along with some conjugation of "to be" -- otherwise, they are either a noun or an adjective. It would be incorrect to say, "I like to listen to music while studying". Ask yourself: in this sentence, who is studying? The answer is no one; the sentence is illogical. The correct way (especially in the GMAT) is to say, "I like to listen to music while I am studying". Now who is studying? I am.
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Re: Heightened land erosion, caused by human activity, has many [#permalink] New post 29 Aug 2014, 11:12
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: Heightened land erosion, caused by human activity, has many   [#permalink] 29 Aug 2014, 11:12
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