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如果6600万年前的小行星没有砸向地球,恐龙还会继续统治地球吗?
6600万年前,恐龙在地球上生存了约1.65亿年后,遭遇了致命打击:一颗直径约15公里的小行星撞击如今的墨西哥地区,引发海啸、野火和酸雨,大量尘埃遮蔽阳光,导致75%的物种在数月内灭绝,包括所有恐龙。
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