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Question

11. Give the percentage of water which is usually available to use for us.


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Solution

  • The earth's surface is covered by 71% water.
  • Out of which 97% of water is in the ocean and sea.
  • 3% of earth's water is freshwater. Out of which 2.5% of fresh water is locked up in glaciers, in the atmosphere, and rivers.
  • Hence, less than 1% of water is usually available to use for us.

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