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# OG13TH - Ice ages

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Manager
Joined: 11 Aug 2012
Posts: 127
Schools: HBS '16, Stanford '16

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07 Oct 2012, 14:47
In the OG13TH, question # 67:

Could someone explain why choice C is incorrect? The OE says this:
"The passage suggests that the ocean water evaporates and through subsequent precipitation helps form the ice sheets, so the amount of oxygen 18 in the ice sheets should be similar to the amount in the precipitation formed from the evaporated water".

I don't find ithe part in which the text indicates that the ice sheets are formed by the evaporated water. Please explain.
Manager
Joined: 29 Apr 2012
Posts: 104
Location: United States
GMAT Date: 10-22-2012
Re: OG13TH - Ice ages [#permalink]

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07 Oct 2012, 23:39
danzig wrote:
In the OG13TH, question # 67:

Could someone explain why choice C is incorrect? The OE says this:
"The passage suggests that the ocean water evaporates and through subsequent precipitation helps form the ice sheets, so the amount of oxygen 18 in the ice sheets should be similar to the amount in the precipitation formed from the evaporated water".

I don't find ithe part in which the text indicates that the ice sheets are formed by the evaporated water. Please explain.

hey could you please paste the qustion here?
Re: OG13TH - Ice ages   [#permalink] 07 Oct 2012, 23:39
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