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关于环境污染的演讲稿

时间:2016-05-06来源:海达范文网

相关热词搜索:水资源污染情况演讲稿 关于空气污染的演讲稿 同意自己观点的英语 有关环境污染的言讲稿

篇一:环境污染的演讲稿

Let me show you some of them

Population Growth(人口增长)

Increasingly large numbers of people are being added to the world every year. As the number of people increases, more pollution is generated, more habitats are destroyed, and more natural resources are used up. Even if new technological advances were able to cut in half the environmental

impact that each person had, as soon as the world's population size doubled, the earth would be no better off than before.

The Population Division of the United Nations predicts that the 5.63 billion humans alive in 1994 will increase to 6.23 billion in the year 2000,

8.47 billion in 2025, and 10.02 billion in 2050. In fact, because larger

amounts of resources per person are used in the developed nations, each citizen from the developed world has a much greater environmental impact than does a citizen from a developing country.

Global Warming(全球变暖)

This process is referred to as the greenhouse effect.

These greenhouse gases, primarily carbon dioxide, methane, nitrous oxide, insulate the earth's surface, helping to maintain warm temperatures. If the concentration of these gases were higher, more heat would be trapped within the atmosphere, and worldwide temperatures would rise.

Air pollution(空气污染)

A significant portion of industry and transportation is based on the burning of fossil fuels, such as gasoline. As these fuels are burned,

chemicals and particulate matter are released into the atmosphere. These chemicals interact with one another and with ultraviolet radiation in sunlight in various dangerous ways. Smog, usually found in urban areas with large numbers of automobiles, can cause serious health problems.

Water pollution(水污染)

Estimates suggest that nearly 1.5 billion people lack safe drinking water and that at least 5 million deaths per year can be attributed to waterborne diseases. Point sources discharge pollutants at specific locations-from, for example, factories, sewage treatment plants, or oil tankers. Non point

sources- for example ,runoff water containing pesticides and fertilizers from acres of agricultural land -are much more difficult to control. Pollution arising from nonpoint sources accounts for a majority of the contaminants in streams and lakes.

Species Extinction(物种灭绝)

What is clear is that species are dying out at an unprecedented rate; minimum estimates are at least 4000 species per year, although some scientists believe the number may be as high as 50,000 per year. The

leading cause of extinction is habitat destruction. At the current rate at which the world's rain forests are being cut down, they may completely disappear by the year 2030.

As habitats are destroyed and species lost, the world is increasingly losing threads from the interconnected fabric of life.

These are 10 kinds of extinct animals in recent decades. They died out because of environmental degradation and human hunting. 桑吉巴尔豹。毛里求斯蚺蛇。 斯皮克斯金刚鹦鹉。金蟾蜍。夏威夷蜜旋木雀。马德拉大白凤蝶。提可巴鳉鱼。比利牛斯山羊。西非黑犀牛。爪哇虎

Chemical Risks(化学成分污染)

Many industrially produced chemicals may cause cancer, birth defects, genetic mutations, or death. Although a growing list of chemicals has been found to pose serious health risks to humans, the vast majority of substances have never been fully tested.

There is only one earth with super living conditions in the universe. It is no doubt that the nature is important to every human being. No nature, no life. I think we can’t prevent environmental degradation, but we can slow down it.

So what can we do to protect our globe? I leave this question to everyone, you can think about it after class.

篇二:环境污染的演讲稿

环境(Environment)

Like all other living beings, humans have clearly changed their environment, but they have done so generally on a grander scale than have other species. Some of these changes-such as the destruction of the world's tropical rain forests to create grazing land for cattle or the drying up of almost three-quarters of the Aral Sea, once the world's fourth-largest freshwater lake, for irrigation purposes-have led to altered climate patterns, which in turn have changed the distribution of species of

animals and plants.

Scientists are working to understand the long-term

consequences that human actions have on ecosystems, while environmentalists-professionals in various fields, as well as

concerned citizens in the United States and other countries-are struggling to lessen the impact of human activity on the natural world.

Population Growth(人口增长)

Increasingly large numbers of people are being added to the world every year. As the number of people increases, more pollution is generated, more habitats are destroyed, and more natural resources are used up. Even if new technological

advances were able to cut in half the environmental impact that each person had, as soon as the world's population size

doubled, the earth would be no better off than before.

The Population Division of the United Nations predicts that the

5.63 billion humans alive in 1994 will increase to 6.23 billion in the year 2000, 8.47 billion in 2025, and 10.02 billion in 2050. In fact, because larger amounts of resources per person are used in the developed nations, each citizen from the

developed world has a much greater environmental impact than does a citizen from a developing country.

Global Warming(全球变暖)

This process is referred to as the greenhouse effect.

These greenhouse gases, primarily carbon dioxide, methane, nitrous oxide, insulate the earth's surface, helping to maintain warm temperatures. If the concentration of these gases were higher, more heat would be trapped within the atmosphere, and worldwide temperatures would rise.

Depletion of the ozone layer(臭氧层变薄)

The ozone layer, a thin band in the stratosphere (a layer in the upper atmosphere), serves to shield the earth from the sun's harmful ultraviolet rays

In the 1970s, scientists discovered that the layer was being

attacked by chlorofluorocarbons (CFCs), chemicals used in refrigeration, air-conditioning systems, cleaning solvents, and aerosol sprays.

Air pollution(空气污染)

A significant portion of industry and transportation is based on the burning of fossil fuels, such as gasoline. As these fuels are burned, chemicals and particulate matter are released into the

atmosphere. These chemicals interact with one another and with ultraviolet radiation in sunlight in various dangerous ways. Smog, usually found in urban areas with large numbers of automobiles, can cause serious health problems.

Water pollution(水污染)

Estimates suggest that nearly 1.5 billion people lack safe drinking water and that at least 5 million deaths per year can be attributed to waterborne diseases.

Point sources discharge pollutants at specific

locations-from, for example, factories, sewage treatment plants, or oil tankers.

Nonpoint sources-runoff water containing pesticides and fertilizers from acres of agricultural land, for example-are much more difficult to control. Pollution arising from nonpoint sources accounts for a majority of the contaminants in streams and lakes.

Species Extinction(物种灭绝)

What is clear is that species are dying out at an unprecedented rate; minimum estimates are at least 4000 species per year, although some scientists believe the number may be as high as 50,000 per year. The leading cause of extinction is habitat destruction, particularly of the world's richest

(转 载 于:wWW.smHAida.cOM 海达范文网:关于环境污染的演讲稿)

As habitats are destroyed and species lost, the world is increasingly losing threads from the interconnected fabric of life.

Chemical Risks(化学成分污染)

Many industrially produced chemicals may cause cancer, birth defects, genetic mutations, or death. Although a growing list of chemicals has been found to pose serious health risks to humans, the vast majority of substances have never been fully tested.

Environmental Racism(环境歧视)

篇三:三分钟英语演讲稿范文关于环境污染的

三分钟英语演讲稿范文关于环境污染的

三分钟英语演讲稿范文关于环境污染的 同上 满意答案: In China, I think the most serious environmental problem is the air pollution, water pollution, land desertification, soil erosion. I think the earth's temperature rises

Is the most serious.After evaporation temperatures, more intense, so will cause drought. Temperatures, glacier melt after,

Sea level will rise, a direct impact on people's life.

I think, water can be recycled. Because water is limited resources, is not renewable, water recycling

Is a waste, and energy saving.

In everyday life, there are many waste of resources. For example, many the use of disposable chopsticks, disposable plastic bags,

Waste water etc.

For our common homeland, I think everyone is responsible for our survival environment to do something

Useful things. Above all, want to improve people's massive propaganda, enlightenment and understanding, strengthen the consciousness of environmental protection.

Next, want to undertake recycling of forest trees, reduce the deforestation. Strengthen the white pollution treatment, use less plastic products.

Finally, to make improvement. Make clean city. A more orderly DaiZhuangHua garbage. This can not only reduce

The sanitation workers less workload, still can better play recycling, reduce pollution and save resources.

Buy vegetables, use less plastic bags, try to use bamboo basket. Eating out as far as possible need not disposable lunch boxes.

篇四:环境污染演讲稿

Iam worried about my country. There is polution everywhere. Itis time to do something about it. We need fresh air to breathe. We need pure water to drink. We need a clean environment to be healthy. People have to stop littering. We have to respect our surroundings. We must become friends of the earth. First,everyone must get involved. Everyone must lend a hand. Together we can clean up our neiborhoods. Second,we can practice conservation. We can reduce waste and reuse things. We can recycle paper,bottles,and plastic. Third,we can put up more "Don't litter" signs. We can trashcans on every corner. We can pick up garbage when we see it. We must take action to fight pollution. It's our future we're protecting. It's our duty to keep our planet clean. So,please don't pollute. Don't be a litterbug. Don't be afraid to remind others,too. Let's protect nature's beauty. Let's make our future bright. Let's start to clean up now.

篇五:三分钟英语演讲稿范文关于环境污染的

三分钟英语演讲稿范文关于环境污染的

三分钟英语演讲稿范文关于环境污染的

同上

满意答案:

In China, I think the most serious environmental problem is the air pollution, water pollution, land desertification, soil erosion. I think the earth's temperature rises

Is the most serious. After evaporation temperatures, more intense, so will cause drought. Temperatures, glacier melt after,

Sea level will rise, a direct impact on people's life.

I think, water can be recycled. Because water is limited resources, is not renewable, water recycling

Is a waste, and energy saving.

In everyday life, there are many waste of resources. For example, many the use of disposable chopsticks, disposable plastic bags,

Waste water etc.

For our common homeland, I think everyone is responsible for our survival environment to do something

Useful things. Above all, want to improve people's massive propaganda, enlightenment and understanding, strengthen the consciousness of environmental protection.

Next, want to undertake recycling of forest trees, reduce the deforestation. Strengthen the white pollution treatment, use less plastic products.

Finally, to make improvement. Make clean city. A more orderly DaiZhuangHua garbage. This can not only reduce

The sanitation workers less workload, still can better play recycling, reduce pollution and save resources.

Buy vegetables, use less plastic bags, try to use bamboo basket. Eating out as far as possible need not disposable lunch boxes

How to Be Popular

Most people would like to be popular with others, but not everyone can achieve this goal. What is the secret to popularity? In fact, it is very simple. The first step is to improve our appearance. We should always make sure that we stay in good shape and dress well. When we are healthy and well-groomed, we will not only look better but also feel better. In addition, we should smile and appear friendly. After all, our facial expression is an important part of our appearance. If we can do this, people will be attracted to our good looks and impressed by our confidence.

Another important step is developing more consideration for others. We should always put others first and place their interests before our own. It's also important to be good listeners; in this way people will feel comfortable enough to confide in us. However, no matter what we do, we must not gossip. Above all, we must remember to be ourselves, not phonies. Only by being sincere and respectful of others can we earn their respect. If we can do all of the above, I am sure popularity will come our way.

如何才能受人欢迎

大部分的人都想受人欢迎,但是并非每个人都能达到目标。受欢迎的秘诀何在?事实上是很简单的。步骤一,先改善我们的外表。我们得确保自己很健康,并且穿着体面。当我们既健康又穿戴整齐时,不仅看起来更有精神,自己也会觉得好多了。此外,我们要保持微笑并表现得很友善。毕竟,脸部表情是外观很重要的一环。如果我们能做到这一点,别人会被我们的美好外表所吸引,并对我们的自信印象深刻。

另一个重要步骤,就是培养对别人的体贴。永远以他人为重,并把别人的利益放在自己的利益之前。当个好听众也是很重要的;如此一来,别人才能很自在地对我们吐露心事。然而,不管我们做什么事,绝对不要说闲言闲语。最重要的是,要做自己,不要当虚伪的人。只有对人真诚又尊重时,才能赢得他人的尊敬。如果我们能做到以上几点,我相信受人欢迎是指日可待的事。

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