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The layer of atmosphere close to the earth's surface

General Awareness Questions  of SSC - Tier 1 with Explanations,
       Also Refer General Reasoning-Part 1

      
Q. The layer of atmosphere close to the earth's surface is called 

      A) Exosphere
      B) Ionosphere
      C) Stratosphere
      D) Troposphere

Answer : Troposphere 
          Troposphere is the lowest layer of the atmosphere. The word "Tropos" means change,there is a constant change in the weather condition in this layer. As this layer consists of 99% of water vapour most of the cloud formation occurs here.

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