he earth is the common homeland for human beings， but human activities on earth caused serious Biological survival of wetland forests， lakes， etc are disappearing at a frightening rate， Coal， oil， natural gas Not renewable energy for exploitation and facing exhaustion， Energy by burning in the greenhouse gas emissions of global warming， which caused the polar ice caps melted and the sea level rise problems threat to human survival and "The world earth day" activities aim is to arouse human love the earth， protecting the homeland， promote the consciousness of environmental protection of the resources development and harmonious China in the 1990s， the annual April 22 were held the world earth day activities， and according to the situation of the theme It is reported that on Earth Day， local land resource science base will be launching the "three ones"， namely a thematic exhibition， a science report， a youth interactive Geological Museum of China， Li Siguang Memorial， and ministerial key laboratories will be an open day， organization of expert resources and science reporting， resource science exhibition creation and scientific
As we can see， the world population is growing rapidly day by So enough fresh water is needed to feed such a big What’s more， with the development of industry， factories and vehicles produce poisonous gases or wastes， which consequently results in the pollution of Though fresh， a good amount of it can no longer be Only quite limited fresh water resource is available to human So it’s high time for us human beings to take quick action to protect water Stop pollution and save water， otherwise， we cannot survive on the 正如我们可以看到，世界人口正在迅速增长每天。因此，需有足够的淡水来养活如此之多人口。更重要的是，工业的发展，工厂和车辆所产生的有毒气体或废物，导致水的污染。大部分新鲜的水资源无法再被利用，只有十分有限的淡水资源能提供给人类。因此，为保护水资源，我们应迅速采取行动的时候到了，阻止污染和节约用水，否则，我们无法生存在地球上。
