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Global warming has contributed to a rise in global sea level

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Global warming has contributed to a rise in global sea level  [#permalink]

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New post 25 Jul 2017, 06:25
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Global warming has contributed to a rise in global sea level not only because it causes glaciers and ice sheets to melt, but also simply because when water is heated its volume increases. But this rise in global sea level is less than it otherwise would be, since over the years artificial reservoirs have been built all around the world that collectively contain a great deal of water that would otherwise reach the sea.

Which one of the following can most reasonably be concluded on the basis of the information above?

(A) The exact magnitude of the rise in global sea level is in dispute.

(B) Rises in global sea level that occurred before the world's reservoirs were built are difficult to explain.

(C) Little is known about the contribution of global warming to the rise in global sea level.

(D) The amount of water in the world's reservoirs is about equal to the amount of water that results from the melting of glaciers and ice sheets.

(E) The amount of water that results from the melting of glaciers and ice sheets cannot be determined by looking at the rise in global sea level alone.

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Re: Global warming has contributed to a rise in global sea level  [#permalink]

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New post 25 Jul 2017, 07:58
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ganand wrote:
Global warming has contributed to a rise in global sea level not only because it causes glaciers and ice sheets to melt, but also simply because when water is heated its volume increases. But this rise in global sea level is less than it otherwise would be, since over the years artificial reservoirs have been built all around the world that collectively contain a great deal of water that would otherwise reach the sea.

Which one of the following can most reasonably be concluded on the basis of the information above?


(A) The exact magnitude of the rise in global sea level is in dispute.
Actually, the passage indicated that humans could measure the exact magnitude of the rise in global sea level because we knew that "rise in global sea level is less than it otherwise would be"

(B) Rises in global sea level that occurred before the world's reservoirs were built are difficult to explain.
Rises in global sea level that occurred before the world's reservoirs were built are irrelevent to the argument.

(C) Little is known about the contribution of global warming to the rise in global sea level.
Actually, there is no information indicated that humans knew much or little about the contribution of global warming to the rise in global sea level.

(D) The amount of water in the world's reservoirs is about equal to the amount of water that results from the melting of glaciers and ice sheets.
There is no information indicated that the amount of water in the world's reservoirs is about equal to the amount of water that results from the melting of glaciers and ice sheets.

(E) The amount of water that results from the melting of glaciers and ice sheets cannot be determined by looking at the rise in global sea level alone.
Correct. Since "rise in global sea level is less than it otherwise would be", we can't conclude anything about the amount of water that results from the melting of glaciers and ice sheets
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Re: Global warming has contributed to a rise in global sea level   [#permalink] 25 Jul 2017, 07:58
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Global warming has contributed to a rise in global sea level

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