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Re: GRE devilish<hard>-atmospheric CO2 can cause long-term [#permalink]
2
As the sentence starts with "until" so it means that the scientists are still unaware of some facts.
So the answer should be B
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Re: GRE devilish<hard>-atmospheric CO2 can cause long-term [#permalink]
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B. uncertainty about is the answer

The sentence structure is Until X happens, Y cannot be determined with certainty. Hence the answer is uncertainty about
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Re: Until the current warming trend exceeds the range of normal [#permalink]
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Added OA

Thank you guys for the discussion. Kudos for you

regards
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Re: Until the current warming trend exceeds the range of normal [#permalink]
IS the answer B?
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Re: Until the current warming trend exceeds the range of normal [#permalink]
If so then why B?
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Re: Until the current warming trend exceeds the range of normal [#permalink]
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Until the current warming trend exceeds the range of normal climatic fluctuations,

As far as we do have this scenarion the scientists will not know for sure if CO2 will have a clear and cutting edge impact on the climate.

B is the only answer that has sense.

Regards
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Re: Until the current warming trend exceeds the range of normal [#permalink]
GRE wrote:
Until the current warming trend exceeds the range of normal climatic fluctuations, there will be, among scientists, considerable _____ the possibility that increasing levels of atmospheric CO2 can cause long-term warming effects.

A interest in
B uncertainty about
C enthusiasm for
D worry about
E experimentation on


B suits
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Re: Until the current warming trend exceeds the range of normal [#permalink]
Hello from the GRE Prep Club VerbalBot!

Thanks to another GRE Prep 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: Until the current warming trend exceeds the range of normal [#permalink]
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