Earth Hour tarted in Autralia with million of home and buinee turning their light off for one hour. Now it ha grown to become one of the world’ bigget climate change initiative. People are all joining together in a global effort to how that it’ poible to take action on global warming.
Earth Hour ha brought about ome new change to our live. The iconic Bird’ Net National Stadium and the nearby Water Cube National Aquatic Center, uually illuminated by floodlight, went dark at 8:30 p.m., while dozen of hotel, office building, hopping mall and retaurant alo witched ome light off. People join activitie uch a candle-lit dinner and tar-gazing partie a a repone to the call for going dark. However, ome critic have dimied the event a imply a gimmick that will not make any difference.
From my point of view, Earth Hour i a global call to action to every individual, every buine and every community. A call to tand up, to take reponibility and to get involved in working toward a utainable future. Earth Hour i a meage of hope and a meage of action. Everyone can make a difference.
There are till many problem of environmental protection in recent year. One of the mot eriou problem i the eriou pollution of air, water and oil. the polluted air doe great harm to people’ health. The polluted water caue dieae and death. What i more, vegetation had been greatly reduced with the rapid growth of modern citie.[由www.haoZuowen.Com整理]
To protect the environment, government of many countrie have done a lot. Legilative tep have been introduced to control air pollution, to protect the foret and ea reource and to top any environmental pollution. Therefore, government are playing the mot important role in the environmental protection today. AD:From Joozone.Com.
In my opinion, to protect environment, the government mut take even more concrete meaure. Firt, it hould let people fully realize the importance of environmental protection through education. Second, much more effort hould be made to put the population planning policy into practice, becaue more people mean more people mean more pollution. Finally, thoe who detroy the environment intentionally hould be everely punihed. We hould let them know that detroying environment mean detroying mankind themelve.
The area of deert in the world i growing every year. Many part of the world which once had large population and produced plenty of crop, have become deert. Dunhuang in China, deep in the heart of the Gebi Deert, wa once a great city.
Cattle are one caue of the problem. In good year, famer increae the number of their cattle. Then one year, the rain fail to come. The farmer do not want to kill any of their cattle, o the cattle eat ail the gra and anything that grow on poorer land. If thi continue for everal year, the gra never grow again and the land become a deert. One uggeted anwer i for farmer to limit the number of their cattle.
Another problem i that good oil i gradually lot. When tree are cut down, there i nothing to hold the oil in place on the hillide. So when if rain, the oil i wahed down the hill and into the river. h2 wind can alo blow away the valuable oil that lie on the top of the field.
地球本是多方位，包罗万象的，但作者从地球的沙漠化方面考虑，列举了造成此情况的原因，暗示人类要注意这个严重的问题。
这是一篇很好的原因 结果式文章。先陈述结果，后列举原因。
地球
世界上沙漠的面积每年都在扩大，许多地区曾经人口众多，五谷丰登，而今却成了沙漠。中国的敦煌曾经是一个大城市，而现在却深深陷入戈壁滩的腹地。
造成戈壁滩的原因之一是牲畜问题。年景好时，农民就增加牲畜饲养的头数。后来有一年天没有下雨，农民又不想把牲畜杀掉。因此，牲畜就把草和更加贫瘠的土地上所长的任何东西全都吃光。这种情况如果继续几年，那么，草就再也长不出来了，土地也就变成了沙漠。有人提出的解决办法是让农民限制饲养牲畜的数量。
另外一个问题就是沃土逐渐流失。树木被砍伐了，山坡上就没有什么东西能够把土壤保持住了。因此，下雨的时候，土壤从山上被冲刷下来，流到河里去了。大风也可能把田地表面的肥沃土壤刮走。