濒临灭绝的动物英语课件

1、1,学习交流PPT,Do you like animals?,Have a look,2,学习交流PPT,3,学习交流PPT,What do you think?They are really lovely!,But unfortunately, they are all endangered animal.,4,学习交流PPT,The twelve most endangered animal species,古巴鳄 （Cuban crocodile）,佛罗里达戴帽蝙蝠 (Florida bonneted bat),5,学习交流PPT,绿眼蛙 （Green Frog）,格林纳达鸽 （Gren

2、ada dove ）,6,学习交流PPT,亨氏羚羊 (Heinz antelope),犁头龟 (Ploughshare tortoise),7,学习交流PPT,苏门答腊猩猩 (Sumatran Orangutan),岛屿灰狐 (Urocyon littoralis ),8,学习交流PPT,白头叶猴 White headed leaf monkey,小头鼠海豚 Phocoena sinus Norris,9,学习交流PPT,普氏野马 (Equus przewalskii ),罗默小树蛙 (Luo s tree frog),10,学习交流PPT,There are over 5000 Verteb

3、rate(脊椎动物） animals are threatened or endangered. Many things can cause animals to become threatened or endangered; Most problems are caused by,11,学习交流PPT,Following are some major PROBLEMS:,First Problems: habitat loss Habitat is the ecosystem(生态系统） of animals, they need to live in proper place, such

4、 as swamp, rain forest, desert, etc. Human replace the animal habitats ,it could cause an extensive loss of ranges for animals.,12,学习交流PPT,Second Problem: pollution,Commercial and industrial operations can reduce land and pollute environment. Air pollution Water pollution,13,学习交流PPT,Third Factor: pr

5、edation or illegal killing,Predation makes animals become endangered is over-fishing or over-hunting.,14,学习交流PPT,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 ani

6、mals become endangered. 许多稀有的动物被人们引进到他们从未生存过的地方，引进一个非本地物种到一个栖息地可能使动物濒临灭绝。,15,学习交流PPT,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） to non-native diseases. Another cause of disease is chemicals. Some chemicals direct effect on some animals population.,16,学习交流PPT,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 ca