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Earthquakes, volcanic eruptions, and unusual weather

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Earthquakes, volcanic eruptions, and unusual weather  [#permalink]

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New post 01 Nov 2017, 03:38
4
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

66% (01:56) correct 34% (01:55) wrong based on 199 sessions

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Earthquakes, volcanic eruptions, and unusual weather have caused many more natural disasters adversely affecting people in the past decade than in previous decades. We can conclude that the planet Earth as a natural environment has become more inhospitable and dangerous, and we should employ the weather and earth sciences to look for causes of this trend.

The conclusion drawn above is most seriously weakened if which of the following is true?

(A) The weather and earth sciences have provided better early warnings systems for natural disasters in the past decade than in previous decades.

(B) International relief efforts for victims of natural disasters have been better organized in the past decade tha in previous decades.

(C) There are records of major earthquakes, volcanic eruptions, droughts, landslides, and floods occuring in the distant past, as well as in the recent past.

(D) Population pressures and poverty have forced increasing numbers of people to live in areas prone to natural disasters.

(E) There have been no changes in the past decade in people's land-use practices that could have affected the climate.
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Re: Earthquakes, volcanic eruptions, and unusual weather  [#permalink]

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New post 01 Nov 2017, 04:01
Between D and E

Negation of E weakens the argument hence E is strengthen the argument.
Ans.D
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Re: Earthquakes, volcanic eruptions, and unusual weather  [#permalink]

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New post 01 Nov 2017, 09:14
Could someone explain why it is D?

How does D weakens the conclusion (i.e., We can conclude that the planet Earth as a natural environment has become more inhospitable and dangerous, and we should employ the weather and earth sciences to look for causes of this trend.)

To me, that more people living in areas that are prone to natural disasters does not seem to weaken the conclusion of rising number of disasters and need of sciences to find the causes of the trend.

Please help provide the source of the question and official explanation.

Thank you.
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Earthquakes, volcanic eruptions, and unusual weather  [#permalink]

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New post 01 Nov 2017, 10:46
Paulli1982 wrote:
Could someone explain why it is D?

How does D weakens the conclusion (i.e., We can conclude that the planet Earth as a natural environment has become more inhospitable and dangerous, and we should employ the weather and earth sciences to look for causes of this trend.)

To me, that more people living in areas that are prone to natural disasters does not seem to weaken the conclusion of rising number of disasters and need of sciences to find the causes of the trend.

Please help provide the source of the question and official explanation.

Thank you.


At first, I read it as you did. I think the vague sentence structure is a bit confusing. But...the conclusion is not a "of rising number of disasters" as you stated above. The conclusion is that "rising number of disasters adversely affecting people". It would make more sense if it was stated this way:
"Earthquakes, volcanic eruptions, and unusual weather have caused many more natural disasters which have adversely affected people during the past decade than in previous decades."

The conclusion is weakened because it is not that the earth has become more dangerous due to disasters which affect people occurring more often. It is that the earth has taken on an appearance of being more dangerous, due to people moving into more dangerous areas.

Does that help?
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Re: Earthquakes, volcanic eruptions, and unusual weather  [#permalink]

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New post 09 Nov 2018, 12:47
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Re: Earthquakes, volcanic eruptions, and unusual weather   [#permalink] 09 Nov 2018, 12:47
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