Thursday, February 01, 2007

..The green house effect..


The greenhouse effect..*
The sun gives us energy in light and heat. But like the earth is not able to absorb all that energy, a part goes to tha space.
Though, not all that radiation escapes through space, a part is absorbed by the greenhouse gases, that are at the atmosphere.
These gases are: carbon dioxide, methane and water steam.
This way the heat is well kept at the atmosphere and at the surface of earth.
This process is called "Green house effect" and lets earth keep an adecuate temperature for the development of life.

The greenhouse effect is important. Without the greenhouse effect, the Earth would not be warm enough for humans to live. But if the greenhouse effect becomes stronger, it could make the Earth warmer than usual. Even a little extra warming may cause problems for humans, plants, and animals.


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