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![Eachyear,about10,000to100,000animalspeciesdieoff.Theyjo...]( "Eachyear,about10,000to100,000animalspeciesdieoff.Theyjo...")
Eachyear,about10,000to100,000animalspeciesdieoff.Theyjo...
问题详情：Eachyear,about10,000to100,000animalspeciesdieoff.Theyjointhecountlessspeciesthathavegoneextinct(灭绝)overthecourseofEarth'shistory-andextinctionmeansforever.Atleastitusedto.Scientistsarenowcl...
