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George: Some scientists say that global warming will occur

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George: Some scientists say that global warming will occur [#permalink] New post 21 Nov 2006, 10:14
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E

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8. George: Some scientists say that global warming will occur because people are releasing large amounts of carbon dioxide into the atmosphere by burning trees and fossil fuels. We can see, though, that the predicted warming is occurring already. In the middle of last winter, we had a month of springlike weather in our area, and this fall, because of unusually mild temperatures, the leaves on our town’s trees were three weeks late in turning color.
Which one of the following would it be most relevant to investigate in evaluating the conclusion of George’s argument?
(A) whether carbon dioxide is the only cause of global warming
(B) when leaves on the trees in the town usually change color
(C) what proportion of global emissions of carbon dioxide is due to the burning of trees by humans
(D) whether air pollution is causing some trees in the are to lose their leaves
(E) whether unusually warm weather is occurring elsewhere on the globe more frequently than before
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Re: CR on global warming! [#permalink] New post 21 Nov 2006, 10:30
jyotsnasarabu wrote:
8. George: Some scientists say that global warming will occur because people are releasing large amounts of carbon dioxide into the atmosphere by burning trees and fossil fuels. We can see, though, that the predicted warming is occurring already. In the middle of last winter, we had a month of springlike weather in our area, and this fall, because of unusually mild temperatures, the leaves on our town’s trees were three weeks late in turning color.
Which one of the following would it be most relevant to investigate in evaluating the conclusion of George’s argument?
(A) whether carbon dioxide is the only cause of global warming
(B) when leaves on the trees in the town usually change color
(C) what proportion of global emissions of carbon dioxide is due to the burning of trees by humans
(D) whether air pollution is causing some trees in the are to lose their leaves
(E) whether unusually warm weather is occurring elsewhere on the globe more frequently than before

My answer. We need to see, whether the similar conditions mentioned by george are happening elsewhere. If changes could be seen across the globe, then one can conclude that there is global warming already. If they are not, then the changes in weather at george's place could be because of george living there.:wink:

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 [#permalink] New post 21 Nov 2006, 10:38
First I went for D but after reading explaination given above convinced that its E..thanks ak_idc..u r the best in solving CR!
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Re: CR on global warming! [#permalink] New post 21 Nov 2006, 10:52
ak_idc wrote:
jyotsnasarabu wrote:
8. George: Some scientists say that global warming will occur because people are releasing large amounts of carbon dioxide into the atmosphere by burning trees and fossil fuels. We can see, though, that the predicted warming is occurring already. In the middle of last winter, we had a month of springlike weather in our area, and this fall, because of unusually mild temperatures, the leaves on our town’s trees were three weeks late in turning color.
Which one of the following would it be most relevant to investigate in evaluating the conclusion of George’s argument?
(A) whether carbon dioxide is the only cause of global warming
(B) when leaves on the trees in the town usually change color
(C) what proportion of global emissions of carbon dioxide is due to the burning of trees by humans
(D) whether air pollution is causing some trees in the are to lose their leaves
(E) whether unusually warm weather is occurring elsewhere on the globe more frequently than before

My answer. We need to see, whether the similar conditions mentioned by george are happening elsewhere. If changes could be seen across the globe, then one can conclude that there is global warming already. If they are not, then the changes in weather at george's place could be because of george living there.:wink:


Nice one AK :-) - E it is..
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Re: CR on global warming! [#permalink] New post 21 Nov 2006, 19:41
ak_idc wrote:
jyotsnasarabu wrote:
8. George: Some scientists say that global warming will occur because people are releasing large amounts of carbon dioxide into the atmosphere by burning trees and fossil fuels. We can see, though, that the predicted warming is occurring already. In the middle of last winter, we had a month of springlike weather in our area, and this fall, because of unusually mild temperatures, the leaves on our town’s trees were three weeks late in turning color.
Which one of the following would it be most relevant to investigate in evaluating the conclusion of George’s argument?
(A) whether carbon dioxide is the only cause of global warming
(B) when leaves on the trees in the town usually change color
(C) what proportion of global emissions of carbon dioxide is due to the burning of trees by humans
(D) whether air pollution is causing some trees in the are to lose their leaves
(E) whether unusually warm weather is occurring elsewhere on the globe more frequently than before

My answer. We need to see, whether the similar conditions mentioned by george are happening elsewhere. If changes could be seen across the globe, then one can conclude that there is global warming already. If they are not, then the changes in weather at george's place could be because of george living there.:wink:


Before reading your comment, I went for E ... But still I would say you teach us CR nicely nowadays. After reading your comments... I'm able to think still more depth in recent days to bring better answer. Thanks for all your great explanations.
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 [#permalink] New post 21 Nov 2006, 19:55
Narrowed it down to A and E. Picked A. Can anyone explain why E and not A?
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 [#permalink] New post 21 Nov 2006, 20:00
kripalkavi wrote:
Narrowed it down to A and E. Picked A. Can anyone explain why E and not A?


Focus of the argument is whether the global warming is happening already. And that is the reason he is giving an example to prove his point that global warming is happening. Now. I think...the answer has to address this aspect. E does that. :wink:
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 [#permalink] New post 21 Nov 2006, 20:05
ak_idc wrote:
kripalkavi wrote:
Narrowed it down to A and E. Picked A. Can anyone explain why E and not A?


Focus of the argument is whether the global warming is happening already. And that is the reason he is giving an example to prove his point that global warming is happening. Now. I think...the answer has to address this aspect. E does that. :wink:


Your analysis is impeccable :-D
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 [#permalink] New post 22 Nov 2006, 00:44
ak_idc wrote:
kripalkavi wrote:
Narrowed it down to A and E. Picked A. Can anyone explain why E and not A?


Focus of the argument is whether the global warming is happening already. And that is the reason he is giving an example to prove his point that global warming is happening. Now. I think...the answer has to address this aspect. E does that. :wink:


Thank you!
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 [#permalink] New post 23 Nov 2006, 00:35
jyotsnasarabu. post the answer. thanks.
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 [#permalink] New post 23 Nov 2006, 03:37
tennis_ball wrote:
jyotsnasarabu. post the answer. thanks.


OA is E. :wink:
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  [#permalink] 23 Nov 2006, 03:37
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