Eachyear,about10,000to100,000animalspeciesdieoff.Theyjo...
2021-08-11
问题详情:Eachyear,about10,000to100,000animalspeciesdieoff.Theyjointhecountlessspeciesthathavegoneextinct(灭绝)overthecourseofEarth'shistory-andextinctionmeansforever.Atleastitusedto.Scientistsarenowcl...