ããããããã¨ããã®ã¯ãããã¾ã§ã®Younger Dryasã®åå ã«ã¤ãã¦ã®èª¬æã®æªãããã§ãæ¥æ¬èªçã®wikipediaã«ãããããã¦ããã 温æåã«ã¨ããªãæ°·åºã®è解ã§ãäºå¤§æ¹ä»è¿ã«ããã¼ã¬ã³ã¿ã¤ãæ°·åºã®å °ãã¨ãã«ãã巨大ãªæ¹ãã§ãã¦ãããããããã¨ããä¸æ°ã«æ±ºå£ãã大éã®æ·¡æ°´ãã»ã³ããã¼ã¬ã³ã¹å·ãéã£ã¦å¤§è¥¿æ´ã«æµå ¥ããã¡ãã·ã³æ¹¾æµã®æµããåã¾ã£ã¦ãã¾ã£ã¦ãå¯å·åãé²ãã ã¨ããæªãã100ï¼ ã®èª¬æï¼ ãããã«1å¹´ãã£ã¦ããã®ã§è±èªçã®wikipediaã¯ãã©ãã¼æ¸ã¿ http://en.wikipedia.org/wiki/Younger_Dryas è«æã¯ãã Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Y

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