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At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
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Struggling with GMAT Verbal as a non-native speaker? Harsh improved his score from 595 to 695 in just 45 days—and scored a 99 %ile in Verbal (V88)! Learn how smart strategy, clarity, and guided prep helped him gain 100 points.
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Riya1475828
Joined: 06 Oct 2023
Last visit: 05 Dec 2024
Posts: 33
Own Kudos:
Given Kudos: 63
Location: India
Schools: INSEAD MiM'24 intake (A$) LBS (D)
GMAT 1: 660 Q47 V34
GPA: 8.6
19 Mar 2024, 05:07
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Scientists have long assumed that Antarctic ice sheets are essentially stable. In theory, snowfall replenishes ice sheets, replacing the mass lost when ice from the sheets flows outward in solid streams and sheds into the oceam as icebergs. However, satellite measurements show that the West Antarctic ice sheet has been losing mass and that its ice streams are accelerating.
To explain these changes, geophysicist Robin Bell and her colleagues have been studying the role played by liquid water under the ice sheet. They have found that although the base of the ice sheet is insulated from changing atmospheric temperatures, it can melt because of friction as it moves over underlying rock. The meltwater lubricates and accelerates the ice streams. Furthermore, some lakes below the ice sheets are draining, adding more lubrication that further destabilizes the streams.
Ordinarily, ice streams cause ice shelves to accumulate at the streams' oceam outlets. These shelves block and slow the streams. But since ice shelves are sensitive to ocean temperatures, global warming can melt them. In 2002, ice streams flowing into Larsen B ice shelf in West Antarctica accelerated dramatically after much of the shelf collapsed into the ocean. This suggests that global warming could allow far more land-based ice to flow into the ocean, raising sea levels rapidly.
PS I'm not able to add the qns here. Requesting expert help here on these qn explanations via these screenshots.
To explain these changes, geophysicist Robin Bell and her colleagues have been studying the role played by liquid water under the ice sheet. They have found that although the base of the ice sheet is insulated from changing atmospheric temperatures, it can melt because of friction as it moves over underlying rock. The meltwater lubricates and accelerates the ice streams. Furthermore, some lakes below the ice sheets are draining, adding more lubrication that further destabilizes the streams.
Ordinarily, ice streams cause ice shelves to accumulate at the streams' oceam outlets. These shelves block and slow the streams. But since ice shelves are sensitive to ocean temperatures, global warming can melt them. In 2002, ice streams flowing into Larsen B ice shelf in West Antarctica accelerated dramatically after much of the shelf collapsed into the ocean. This suggests that global warming could allow far more land-based ice to flow into the ocean, raising sea levels rapidly.
PS I'm not able to add the qns here. Requesting expert help here on these qn explanations via these screenshots.
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Riya1475828
Joined: 06 Oct 2023
Last visit: 05 Dec 2024
Posts: 33
Own Kudos:
Given Kudos: 63
Location: India
Schools: INSEAD MiM'24 intake (A$) LBS (D)
GMAT 1: 660 Q47 V34
GPA: 8.6
19 Mar 2024, 05:33
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19 Mar 2024, 05:37
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Riya1475828
Posted here: https://gmatclub.com/forum/scientists-have-long-assumed-that-antarctic-ice-sheets-are-essentially-427456.html Please check there the correct wy of posting RC. Hope it helps.
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Reading Comprehension (RC) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
