Dec 12 2007
The Greenhouse Effect in Layman’s Terms
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 The science of how the Earth is warmed is relatively straight-forward.
>Energy and light from sun go through the Earth’s atmosphere and strike its surface, which warms the planet.
>The Earth emits the energy, but it is trapped in the atmosphere by naturally occurring greenhouse gases — like water vapor and carbon dioxide — which help maintain a warm, comfortable temperature for life to exist.
>The earth’s temperature is generally about 60 degrees Fahrenheit (about 16 degrees Celsius).
>Without the naturally occurring greenhouse gases, the temperature would plunge to about 0 degrees Fahrenheit (minus 18 degrees Celsius).
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