濒临灭绝的动物英语省公共课一等奖全国赛课获奖课件.pptx

第1页Do you like animals?Have a look第2页第3页What do you think?They are really lovely!But unfortunately,they are all endangered animal.第4页The twelve most endangered animal species 古巴鳄（Cuban crocodile）佛罗里达戴帽蝙蝠佛罗里达戴帽蝙蝠(Florida bonneted bat)第5页绿眼蛙绿眼蛙（Green Frog）格林纳达鸽格林纳达鸽（Grenada dove）第6页亨氏羚羊亨氏羚羊(Heinz antelope)犁头龟犁头龟(Ploughshare tortoise)第7页苏门答腊猩猩苏门答腊猩猩(Sumatran Orangutan)岛屿灰狐岛屿灰狐(Urocyon littoralis)第8页 白头叶猴白头叶猴 White headed leaf monkey小头鼠海豚小头鼠海豚 Phocoena sinus Norris第9页普氏野马普氏野马(Equus przewalskii)罗默小树蛙罗默小树蛙(Luo s tree frog)第10页There are over 5000Vertebrate(脊椎动物）脊椎动物）animals are threatened or endangered.Many things can cause animals to become threatened or endangered;Most problems are caused by第11页Following are some major PROBLEMS:First Problems:habitat loss Habitat is the ecosystem(生态系统）生态系统）of animals,they need to live in proper place,such as swamp,rain forest,desert,etc.Human replace the animal habitats,it could cause an extensive loss of ranges for animals.第12页Second Problem:pollution Commercial and industrial operations can reduce land and pollute environment.Air pollution Water pollution第13页Third Factor:predation or illegal killing Predation makes animals become endangered is over-fishing or over-hunting.第14页Forth Factor:introduction animal Many rarity animals are introduced by people to areas where they never existed before.The introduction of a non-native species to a habitat may make animals become endangered.许多稀有动物被人们引进到他们从未生存许多稀有动物被人们引进到他们从未生存过地方，引进一个非当地物种到一个栖息过地方，引进一个非当地物种到一个栖息地可能使动物濒临灭绝。地可能使动物濒临灭绝。第15页Fifth Factor:disease Introduced animals bring new diseases with them,becomes another reason of why are animals endangered.The native animals cant resistance（抵抗）（抵抗）to non-native diseases.Another cause of disease is chemicals.Some chemicals direct effect on some animals population.第16页Whats your feeling now?Do you want these lovely animals live?We have to know that when animals become endangered,the entire food chain can be affected.These five major PROBLEMS are all caused by HUMANS!第17页So!Please!Help the endangered animals,help ourselves,help the world!第18页第19页