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5. What happens to the isotopic composition of the oceans during an ice age? A The oceans become enriched in 160 because 180 is preferentially evaporated and locked up in ice sheets B The oceans become enriched in 180 because 160 is preferentially evaporated and locked up in ice sheets C The isotopic composition of the oceans is unchanged because water is still moving through the hydrologic cycle D Any of the above may happen depending on other controlling factors

5. What happens to the isotopic composition of the oceans during an ice age? A The oceans become enriched in 160 because 180 is preferentially evaporated and locked up in ice sheets B The oceans become enriched in 180 because 160 is preferentially evaporated and locked up in ice sheets C The isotopic composition of the oceans is unchanged because water is still moving through the hydrologic cycle D Any of the above may happen depending on other controlling factors

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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5. What happens to the isotopic composition of the oceans during an ice age? A The oceans become enriched in 160 because 180 is preferentially evaporated and locked up in ice sheets B The oceans become enriched in 180 because 160 is preferentially evaporated and locked up in ice sheets C The isotopic composition of the oceans is unchanged because water is still moving through the hydrologic cycle D Any of the above may happen depending on other controlling factors
Transcribed Image Text:5. What happens to the isotopic composition of the oceans during an ice age? A The oceans become enriched in 160 because 180 is preferentially evaporated and locked up in ice sheets B The oceans become enriched in 180 because 160 is preferentially evaporated and locked up in ice sheets C The isotopic composition of the oceans is unchanged because water is still moving through the hydrologic cycle D Any of the above may happen depending on other controlling factors
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