3分钟关于全球变暖的英语演讲稿4篇

3分钟关于全球变暖的英语演讲稿4篇

分钟关于全球变暖的英语演讲稿 篇一

global warming the gradual increase of the temperature of the earth#39;s lower

atmosphere as a result of the increase in greenhouse gases since the Industrial Revolution.

The temperature of the atmosphere near the earth#39;s surface is warmed through a

natural process called the greenhouse effect. Visible shortwave light comes from the sun to the

earth passing unimpeded through a blanket of thermal or greenhouse gases composed largely of

water vapor carbon dioxide methane nitrous oxide and ozone. Infrared radiation reflects off the

planet#39;s surface toward space but does not easily pass through the thermal blanket. Some of

it is trapped and reflected downward keeping the planet at an average temperature suitable to

life about 60°F (16°C)。

Growth in industry agriculture and transportation since the Industrial Revolution has

produced additional quantities of the natural greenhouse gases plus chlorofluorocarbons and

other gases augmenting the thermal 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 1.1°F (0.6°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 change; extinction of species as

ecological niches disappear; more frequent tropical storms; and an increased incidence of

tropical diseases.

Improved automobile mileage reforestation projects energy efficiency in construction and

national support for mass transit are among relatively simpler adjustments that could

significantly lower U.S. production of greenhouse gases. More aggressive adjustments include a

gradual worldwide shift away from the use of fossil fuels the elimination of chlorofluorocarbons

and the slowing of deforestation by restructuring the economies of developing nations. In

20__the Bush administration proposed several voluntary measures for slowing the increase in

instead of reducing emissions of greenhouses gases.

分钟关于全球变暖的英语演讲稿 篇二

In recent years do you think the weather suddenly turned hot had the cool autumn now

almost until early October the hottest day in August has reached more than 40 degrees. These is

different from normal vision we have ourselves to blame the curse.

Today the term global warming has gradually penetrated into our life. The word sounds very

academic even feel very far away from us so some people are not. In fact the effects of global

warming is beyond our imagination: global precipitation redistribution glaciers and permafrost

melt rising sea levels and so on. Both harm the natural ecosystem balance more threatening

human food supply and living environment.

Now that you have aware of the dangers of global warming you should go to predict and

improve it. Imagine if global warming is melting in the 21st century the global average

temperature rising gradually so the next super storms the next round of searing heat the next

major natural disasters will happen? China? The United States? Japan? No one knows. The

debate has ended. Scientists around the world agree points out that the earth#39;s average

temperature has increased nearly 1 ℃。 Due to all the early warning information human use of thousands of ships tens of thousands of the monitoring stations of the land and outer space

satellite to monitor the earth together. Scientists will have the most advanced computer data

input model to estimate the earth can face the future. Prediction results are worrying. Forty

years later the Himalayan glaciers the water to the survival of millions of people are likely to

disappear. The Greenland ice sheet could melt in 50 years. Currently half of the world#39;s

biodiversity in the amazon rainforest but the rainforest is likely to turn into a piece of barren land

by the end of the century. Is likely to be the future of the world like in the movie the day after

tomorrow tornado ice fracture the temperature fell sharply ice storms freezing rain earthquake

flood tsunami volcanic eruption.。. This is not a crazy fantasy if humans don#39;t stop destroying

the environment it will become a reality!

However in the warming is also good. Global warming on rice in heilongjiang province has

played a large role.