全球变暖的原因英语.ppt

Our globe is in danger! The environmental problems!!! Sandstorm Water pollution Deforestation Air pollution Drought Littering Light pollution Desertification Melting polar ice cap Sandstorm AS far as chen guang(陈光)is concerned, the reason why sandstorms strike us so often are as follows: Firstly,to build house and grow more crops,people cut down more and more trees every year. Secondly,large areas of green grass and forests have been destroyed because of the pollution caused by some factories. Thirdly,when plenty of big trees are cut down ,few young trees are planted .Gradually, so many green hills turn into wastland.When rains fell to come,sandstroms strike us. So the best solution for us is action.we must look after the forests and plant more trees right now. Dirty air and poisonous water from factories should be made clean before they are sent into the air or poured into river. Water pollution Deforestation采伐森林 Air pollution Drought  Littering It is the natural revenge(报复) that makes flood and tsunami happen frequently. What can we do to prevent our globe from being in danger?  * * Our legendary forest!我们传说中的森林！ Believe it or not, it is true thing ! I don’t stand to see! 目不忍视！！！ I don’t dare to see! 惨不忍睹！！！！ I don’t want to say anything ! 你懂的！！！！！！！！ IS that our futuer? flood tsunami In my view,we have the responsibilities to take care of the Earth for ourselves and for our later generation.Not only should we realize these problems ,but also we should take messures to cope with these problems with the help of the government.Althought the laws have been passed to stop pollution ,there is still a long long way to go! *