nature and men.ppt

* Man and Nature They are inexhaustible. They plentiful because new things are constantly added to them. They are exhaustible because nothing new is ever added to them. they are being used up soon because we are not using them wisely. We have reduced our natural resources. We have made our environment dirty. We have completely destroyed our environment. We have polluted our environment in many ways. We should fully recognize that the environment is in trouble and we are at fault. We should stop abusing our environment and take actions to fight against pollution. We must be aware that our environment is a closed system and therefore we should try our best to keep it clean. We should change our environment on order to continue to survive. How many problems have been described in this clip? deforestation, pollution, energy crisis, desertification, water shortage, species extinction, species endangered Environment vocabulary —how much do you know about the environmental problems below? A problematic world Mammal Freshwater fish Species Coral reef Virgin forest Drinking water Water supply Panda The urgent situation of some of the endangered species Flamingo Koala Eagle Tiger Lin: That’s terrible! And will there be any other effects? John: Yes, there will be many. The global weather system will change too, causing too much rain in some areas and too little in others. Lin: Can we do something about it? John: There’re a lot we can do. First of all, we must reduce the amount of pollution coming from industries and cars and stop deforestation. Otherwise, we will suffer from our careless actions. Lin: Is the Earth really getting warmer? John: Yes, there’s no doubt about it. Scientists say that four years out of the last ten have been the hottest since records began. Lin: But why does it matter if the Earth gets a little warmer? John: It matters because it changes a lot of things concerning our life. If the Earth gets hotter, this will cause the level of the sea to rise. Li