物种灭绝英语PPT

Theextinctionofspecies占迎1705202009Contents•1.Thedefinitionofspeciesextinction•2.Theprocessofextinction•3.Thecausesofextinction•4.Theconsequencesofextinction•5.Themethodsofprotectingendangeredanimals1.Thedefinitionofspeciesextinction•Irreducible•Disappearance•Destruction•Plantsoranimals2.Theprocessofextinction•sixth•fasterspeed3.Thecausesofextinction•Naturalcauses①Racecompetition②Epidemicofgerms③Geologicalchanges④Volcaniceruption⑤……•Humancauses①Habitatloss②Overexploitation③Blindintroduction④Environmentalpollution⑤……4.Theconsequencesofextinction•(1)reducespeciesdiversity•(2)Hugelossofbiologicalgenebank•(3)Destroytheecologicalbalance•(4)……5.Themethodsofprotectingendangeredanimalsgovernment•(1)createnaturereserves•(2)developadomesticatedbreedingmethod•(3)resourcemonitoringandscientificresearch•(4)strengthenthelegalsupervisionsystemWhatcanwedoasacitizen?•(1)respectlife•(2)nopurchaseofwildanimalproducts•(3)don’teatwildanimal•(4)stopthetraffickingofwildanimals