搜索结果: 1-1 共查到“Marine ecosystems”相关记录1条 . 查询时间(0.14 秒)
Dramatic shift from simple to complex marine ecosystems occurred 250M years ago at mass extinction（图）
marine species ecology
2006/12/8
November 25, 2006，CHICAGO--The earth experienced its biggest mass extinction about 250 million years ago, an event that wiped out an estimated 95% of marine species and 70% of land species. New resear...