全球变暖英文演讲稿Word文件下载.docx

1、331￥Yo2Global WarmingThere is little doubt that the planet is warming. Over the last century, the planets temperature has risen by around 1 degree fahrenheit （ of a degree celsius）. The warmest since the mid 1800s was the 1990s. The hottest years recorded were 1997, 1998, 20XX, 20XX, 20XX.The United

2、 Nations panel on climate change projects that the global temperatures will rise 3-10 degrees fahrenheit by the centurys end - enough to have the polar caps all but melted. If the ice caps melt, a vast majority of our countries borders will be under water. Monuments and great buildings, as well as h

3、omes and lives will be under water, including New York City.So now we know what some of the causes are for global warming, how can we as individuals do our part to help save the planetThe answer is simpler than you may think. You dont have to go miles away from home to protest, or spend masses of mo

4、ney. If you try to follow the few simple steps that I shall now give you, you will have started to help us all.Firstly, plant a tree. This could be easier than it sounds. Join or help out a local wildlife group and ask to plant a tree. Trees, when fully grown, will help keep the planet cooler. On th

5、e same point, you could protest against the demolition of the rainforests. This is the same principle, we need the trees to cool our planet and yet they are chopping them down to create roads or homes.Something as simple as walking instead of taking the car will help reduce pollution. As well as sto

6、pping pollution, you are giving yourself exercise, something important for our bodies. So the next time you get into your car, or your motorbike, think - do I have to make this journey by vehicle or can I walkWhen you are at home, and your getting a little cold. Put a jumper on and do not adjust the

7、 heating. The extra heat produced by our homes also affects the planet. So try wearing an extra layer in winter.If possible, buy your fruit and vegetables from local suppliers. And try to avoid imported goods. The more foreign food that we import the more pollution from aeroplanes and boats it will

8、create.Keeping to the speed limit can also help the environment. The more you speed the more petrol you are going to use, making the pollution higher. Also, SUVs make about six times their own weight in CO2 each year. A small efficient diesel car covering the same distance not only uses much less fu

9、el; it makes two thirds less.If possible use solar energy, after all it is free; all you need to buy is the equipment. You can get much of your hot water and heating from the sun and even generate electricity.Reduce, reuse and recycle. Only buy what you need; dont stock the cupboards with things you

10、 may or may not use. Reuse whatever you can, like containers and paper, and recycle what you cannot reuse. It really is as simple as that.Finally turning off unused sources of power such as televisions and heaters will help the environment, as well as save you money.If everybody stuck to these rules

11、, we would be doing a great thing by protecting the earth. So please take into consideration what I have said, and try to do your part. After all, it will be our next generation that will feel the effects.篇二：英语演讲 环境 温室效应The Greenhouse Effect全球气候变暖，是到目前为止对地球和人类生存最为紧迫也最为严重的威胁因素之一。Global warming is one

12、 of the most urgent and the most serious factors now threaten Earth and humans survival最近，全世界冰川融化速度创下历史最快纪录，从安第斯山脉到北极，冰川消融速度加快。全球气候变暖将直接导致南、北极以及其它冰川融化，同时一些雪山也将随着气温的不断升高而消失。而融化后的冰川，将使海平面快速上升，世界很多美丽的城市终将被海水所淹没。Recently, The speed of melting glaciers set the record for the fastest, from the Andes to th

13、e Arctic glaciers melting faster. Global warming will lead directly to melting of the Antarctic, the Arctic and other glaciers, Meanwhile, some snow-capped mountains will disappear with temperatures rise. The glaciers melted will enable the sea level to rise rapidly, many beautiful cities in the wor

14、ld will eventually be submerged.100年后 南极只曾留下回忆100 years later, the Antarctic had left only memories气温升高，全球变暖，极地冰川融化，企鹅失去家园！Higher temperatures makes global warming and Melting of polar ice, so the penguins lose their homes!30年后的夏季，北极可能是一片汪洋Summer after 30 years, the Arctic may be an ocean. 乞力马扎罗山的“雪

15、帽”将在15年内被摘掉Kilimanjaro snow cap will be taken off in 15 years.乞力马扎罗山是非洲最高的山脉，它距离赤道仅仅300多公里，顶部却终年满布冰雪。但是，全球变暖导致这座山的终年积雪不断消融，专家预言，“雪帽”将在15年内被摘掉。Kilimanjaro is the highest mountain in Africa, it is just over 300 km from the equator, but the top covered with snow all year round. However, Global warming

16、leads to the mountain snow continue to melt, experts predict, 什么造成了温室效应What causes the greenhouse effect我认为主要有两个原因：人类排放二氧化碳和砍伐树木I think there are two main reasons: human emissions of carbon dioxide and cuts down trees.人类每秒钟释放的二氧化碳已经超过700吨，一年就是230亿吨 Carbon dioxide released by humans every second has

17、more than 700 tons ,a year is 23 billion tons.亚马孙河流域的农民正在焚烧热带雨林，以开垦更多耕地。每分钟，全世界清除掉的热带森林的面积，相当于200个足球场的大小。依照现在的这种破坏速度，亚马孙雨林将在400年以内完全消失。Amazonian farmers are burning rainforest to reclaim more land. Every minute, The worlds tropical forests cleared an area equivalent to the size of 200 football field

18、s . According to the current rate of this destruction , The Amazon rainforest will xxpletely disappear within 400 years.我们依靠在地球上的一切，我们需要生存，所以让我们照顾它。 We rely on the Earth for everything, we need to survive, so lets take care of it.篇三：以全球变暖问主题的演讲稿global warming, the gradual increase of the temperature

19、 of the earths lower atmosphere as a result of the increase in greenhouse gases since the Industrial Revolution.The temperature of the atmosphere near the earths surface is warmed through a natural process called the greenhouse effect. Visible, shortwave light xxes from the sun to the earth, passing

20、 unimpeded through a blanket of thermal, or greenhouse, gases xxposed largely of water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Infrared radiation reflects off the planets surface toward space but does not easily pass through the thermal blanket. Some of it is trapped and reflected

21、downward, keeping the planet at an average temperature suitable to life, about 60F （16C）.Growth in industry, agriculture, and transportation since the IndustrialRevolution has produced additional quantities of the natural greenhouse gases plus chlorofluorocarbons and other gases, augmenting the ther

22、mal blanket. It is generally accepted that this increase in the quantity of greenhouse gases is trapping more heat and increasing global temperatures, making a process that has been beneficial to life potentially disruptive and harmful. During the past century, the atmospheric temperature has risen

23、F （C）, and sea level has risen several inches. Some projected, longer-term results of global warming include melting of polar ice, with a resulting rise in sea level and coastal flooding; disruption of drinking water supplies dependent on snow melts; profound changes in agriculture due to climate ch

24、ange; extinction of species as ecological niches disappear; more frequent tropical storms; and an increased incidence of tropical diseases.Among factors that may be contributing to global warming are the burning of coal and petroleum products （sources of carbon dioxide, methane, nitrous oxide, ozone

25、）; deforestation, which increases the amount of carbon dioxide in the atmosphere; methane gas released in animal waste; and increased cattle production, which contributes to deforestation, methane production, and use of fossil fuels.Much of the debate surrounding global warming has centered on the a

26、ccuracy of scientific predictions concerning future warming. To predict global climatic trends, climatologists accumulate large historical databases and use them to create xxputerized models that simulate the earths climate. The validity of these models has been a subject of controversy. Skeptics sa

27、y that the climate is too xxplicated to be accurately modeled, and that there are too many unknowns. Some also question whether the observed climate changes might simply represent normal fluctuations in global temperature. Nonetheless, for some time there has been general agreement that at least par

28、t of the observedwarming is the result of human activity, and that the problem needs to be addressed. In 1992, at the United Nations Conference on Environment and Development, over 150 nations signed a binding declaration on the need to reduce global warming.In 1994, however, a UN scientific advisor

29、y panel, the Intergovernmental Panel on Climate Change, concluded that reductions beyond those envisioned by the treaty would be needed to avoid global warming. The following year, the advisory panel forecast a rise in global temperature of from to F （C） by 2100 if no action is taken to cut down on

30、the production of greenhouse gases, and a rise of from 1 to F （2C） even if action is taken （because of already released gases that will persist in the atmosphere）.A UN Conference on Climate Change, held in Kyoto, Japan, in 1997 resulted in an international agreement to fight global warming, which ca

31、lled forreductions in emissions of greenhouse gases by industrialized nations. Not all industrial countries, however, immediately signed or ratified the accord. In 20XX the G. W. Bush administration announced it would abandon the Kyoto Protocol; because the United States produces about one quarter o

32、f the worlds greenhouse gases, this was regarded as a severe blow to the effort to slow global warming. Despite the American move, most other nations agreed later in the year （in Bonn, Germany, and in Marrakech, Morocco） on the details necessary to convert the agreement into a binding international treaty, which came into force in 20XX aft