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(1) the recent trend toward global warming, scientists have long wondered whether the Earthis nearing another ice age, an end to the 12,000-year temperate spell in which civilizations arose. ... Many ice cores have been (8) various glaciers and ice sheets around the world, but until now none have reached back beyond 420,000 years, making this core the first to capture fully the conditions during the long-lasting warm period, called Termination V.
――早稲田大学 教育学部(2月19日実施)――2005年
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