Atmosphere

As humans we cannot live without Air. The envelop of gases surrounding the earth is called atmosphere. Atmosphere doesn't have any color, a taste and smell.
                              
               Atmosphere composed mainly of : 

                                 70%        Nitrogen
                                 21%        Oxygen
                                 0.93%     Argon
                                 0.4%       Carbon Dioxide

Atmosphere has 05 layers.. There are Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere.


  Troposphere is the lowest layer in the atmosphere. Climate change    occurs and water vapor in this layer.

  Stratosphere has an Ozon layer preventing a harmful UV rays. 

  Mesosphere is where most meteorites burn up upon entering the        earth's atmosphere.

 Thermosphere the auroras occurs in this layer. temperatures rising     up 2500℃ . 
 Exosphere is where the atmosphere transitions in to outer space.
 

 For breathing, regulate weather and climate, protection from harmful radiation are advantages of atmosphere. 





  

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