单词：Permian system
二叠系
单词：Permian system 相关文章
37 研究表明2500万年前流星曾碰撞过地球 DATE=4-18-01 TITLE=SCIENCE REPORT - Meteor Collision With Earth BYLINE=Jill Moss (Start at 59
发表于:2019-01-16 / 阅读(182) / 评论(0)
科技之光
科技之光
Science and technology 科学技术 Mass extinctions 大灭绝 Small but deadly 陨石很小不过危害却很致命 The biggest extinction in history was probably caused by a space rock that changed the climate 历史上规模最大的一次物种灭绝
发表于:2019-02-06 / 阅读(110) / 评论(0)
经济学人科技系列
经济学人科技系列
Earth has seen five major extinction episodes in its time the Ordovician, Devonian, Permian, Triassic, and Cretaceous, in that order and many smaller ones. 地球已经目睹了5次大的灭绝事件依次在奥陶纪、泥盆纪、二叠纪、三叠纪
发表于:2019-02-17 / 阅读(130) / 评论(0)
万物简史
万物简史