物种灭绝英语ppt课件.pptx

《物种灭绝英语ppt课件.pptx》由会员分享，可在线阅读，更多相关《物种灭绝英语ppt课件.pptx（10页珍藏版）》请在三一办公上搜索。

1、The extinction of species,占迎1705202009,Contents,1.The definition of species extinction2.The process of extinction3.The causes of extinction4.The consequences of extinction5.The methods of protecting endangered animals,1.The definition of species extinction,IrreducibleDisappearanceDestructionPlants o

2、r animals,2.The process of extinction,sixthfaster speed,3.The causes of extinction,Natural causesRace competitionEpidemic of germsGeological changesVolcanic eruption,Human causesHabitat lossOverexploitationBlind introductionEnvironmental pollution,4.The consequences of extinction,(1)reduce species d

3、iversity(2)Huge loss of biological gene bank(3)Destroy the ecological balance(4),5.The methods of protecting endangered animals,government(1)create nature reserves(2)develop a domesticated breeding method(3)resource monitoring and scientific research(4)strengthen the legal supervision system,What can we do as a citizen?,(1)respect life(2)no purchase of wild animal products(3)dont eat wild animal(4)stop the trafficking of wild animals,Thank you!,