what is the process by which green house gases affect the atmosphere of the earth and how it works (including the effects of water vapor)?
What are some sources of these gases-natural and man-made?
short paragraph
The greenhouse effect is a natural process that warms the Earth’s surface. When the Sun’s energy reaches the Earth’s atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases.Greenhouse gases include water vapour, carbon dioxide, methane, nitrous oxide, ozone and some artificial chemicals such as chlorofluorocarbons (CFCs).The absorbed energy warms the atmosphere and the surface of the Earth. This process maintains the Earth’s temperature at around 33 degrees Celsius warmer than it would otherwise be, allowing life on Earth to exist . Sources of green house gases are usually man made like road transport , power plants , coal mining rec.
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