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One Question A day Reading Comprehesion Q#3 27022014

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One Question A day Reading Comprehesion Q#3 27022014  [#permalink]

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New post Updated on: 24 Jul 2015, 21:44
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One Question A day Reading Comprehesion Q#3 27022014

The levels of dissolved oxygen in the world’s ocean waters are declining precipitously. Just like humans, fish need oxygen to survive, and so in ocean areas experiencing significant levels of oxygen scarcity, or hypoxia, fish populations are plummeting. Although some hypoxic areas, called “dead zones,” occur naturally, hypoxia in coastal areas and inland waters is caused mainly by agricultural run-off and by discharge of industrial waste waters. More than one-hundred permanent dead zones, many covering thousands of square miles, exist worldwide today.
Since reproductive success is the most critical factor in the sustainability of any species, the extent of this threat to marine life and genetic diversity can hardly be overstated. After several months in hypoxic waters, female fish produce fewer eggs. Moreover, hypoxic conditions serve to alter the normal ratio between two particular hormones manufactured during the embryonic stage when a fish’s gender is determined. During gestation and under these conditions, the mother produces more testosterone (and less estradiol), which inhibits the development of female reproductive organs and other female characteristics in the embryo, while promoting the development of male traits. Source: based on GMAT Pill


Question

The passage explicitly supports the assertion that hypoxia

(A) drives salt-water fish away from coastal waters
(B) occurs mainly in inland waters
(C) poses a threat to the coastal fishing industry
(D) is the result of lax environmental regulation
(E) oxygen-depleted areas occur due to impact of man-made causes



Answer and Analysis

The correct response is (C). In the second paragraph the author states that "the extent of this threat to marine life and genetic diversity can hardly be overstated," suggesting that in the author's view hypoxia has reached critical, or alarming, levels, especially to marine life.

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Originally posted by daagh on 01 Mar 2014, 21:55.
Last edited by daagh on 24 Jul 2015, 21:44, edited 1 time in total.
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Re: One Question A day Reading Comprehesion Q#3 27022014  [#permalink]

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New post 18 Jun 2018, 19:54
Hi abhimahna,
I chose E. Can you explain how the answer can be C ?
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Re: One Question A day Reading Comprehesion Q#3 27022014  [#permalink]

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New post 29 Jun 2018, 22:43
Hello daagh,

From below sentence, we can infer that hypoxia can be due to the impact of man-made causes. But they are not the only causes.
I chose option E.

Although some hypoxic areas, called “dead zones,” occur naturally, hypoxia in coastal areas and inland waters is caused mainly by agricultural run-off and by discharge of industrial wastewaters.

Could you please correct me if my thought process is wrong.
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Re: One Question A day Reading Comprehesion Q#3 27022014  [#permalink]

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New post 29 Jun 2018, 23:47
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The question emphasizes the word 'asserts'; 'Asserts' means that the result should be 100% and without any exceptions.
The levels of dissolved oxygen in the world’s ocean waters are declining precipitously. Just like humans, fish need oxygen to survive, and so in ocean areas experiencing significant levels of oxygen scarcity, or hypoxia, fish populations are plummeting. Although some hypoxic areas, called “dead zones,” occur naturally, hypoxia in coastal areas and inland waters is caused mainly by agricultural run-off and by discharge of industrial wastewaters. More than one-hundred permanent dead zones, many covering thousands of square miles, exist worldwide today.

Since reproductive success is the most critical factor in the sustainability of any species, the extent of this threat to marine life and genetic diversity can hardly be overstated. After several months in hypoxic waters, female fish produce fewer eggs. Moreover, hypoxic conditions serve to alter the normal ratio between two particular hormones manufactured during the embryonic stage when a fish’s gender is determined. During gestation and under these conditions, the mother produces more testosterone (and less estradiol), which inhibits the development of female reproductive organs and other female characteristics in the embryo, while promoting the development of male traits. Source: based on GMAT Pill

The passage explicitly supports the assertion that hypoxia.

(A) drives salt-water fish away from coastal waters--- no mention of sea fish being driven away
(B) occurs mainly in inland waters ---- --oxygen in the world’s ocean waters'---So only 'inland waters' ruled out.
(C) poses a threat to the coastal fishing industry --- The only thing that can be cent percent said confidently
.
(D) is the result of lax environmental regulation --Hypoxia occurs naturally also. So lax regulation is ruled out
(E) oxygen-depleted areas occur due to the impact of man-made causes-- Once again 'naturally occurring dead zones' rule out the man-made causes as the only cause.
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you can know a lot about something and not really understand it."-- a quote
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Re: One Question A day Reading Comprehesion Q#3 27022014 &nbs [#permalink] 29 Jun 2018, 23:47
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One Question A day Reading Comprehesion Q#3 27022014

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