Wednesday, March 4, 2009

Task2:An introduction to global warming

Global warming is one of the most controversial issues of the 21st century; it is threatening our world and the earth we are living on.
Global warming is caused by the huge increase of greenhouse gases, such as carbon dioxide, in the earth's atmosphere. These gases are the direct result of burning fossil fuels and deforestation that is overusing the forests all over the world. There is evidence that the amount of these gases have reached their peak in the last decades.
Many scientists believe that the Earth is warming faster than at any other time.
There is a gradual rise in the global temperatures as well as a rise in sea level.
In addition, weather patterns are becoming more unpredictable and the occurrence of extreme weather events is becoming more frequent. I think of the climatic events that took place in the world in the last decade .The Tsunami in Asia ,the floods in Australia and India and the droughts in Africa.
In conclusion, if no measures are taken to stop global warming, our world will be destroyed.

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