Sunday, April 22, 2007

What is global warming ?

Global warming happens when the temperature of the Earth increases because of the excess use of carbon dioxide and fossil fuels for electricity, coal, greenhouse gases, and energy. These gases make the layer around the earth thicker which doesn’t allow sun rise to bounce back out of the earth.
This change in the world is causing a lot of long term problems like the rise in temperature. As a result of this, the North and South Pole starts melting causing the sea level to rise, many countries and islands will drown from this change. This is a global problem because it has many affects on the whole world. In order to protect the environment we should look for other sources of energy like solar energy, wind energy, and photovoltaic roofing for electricity.

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