Saturday, April 28, 2007

Global warming


Global warming is defined as the increase in the average of the earth’s atmosphere temperature which is enough to change the climate of the earth.
From the definition of global warming we can notice that the temperature of the earth is increasing which made some ice areas to melt rapidly, and US scientists say that the Arctic ice cap may completely vanish by the end of the century. The result of the ice melting is a climate disaster because if the amount of ice recedes it means that the planet cannot reflect the sun rays and cool itself. The main reasons of global warming are greenhouse emissions and air pollution so scientists say that we should use more efficient energy sources to protect our planet from global warming.

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