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      Question

      A natural geo-hydrological unit of land that collects water

      and drains it through a common point by a system of streams is called a:
      A Watershed Correct Answer Incorrect Answer
      B Reservoir Correct Answer Incorrect Answer
      C Aquifer Correct Answer Incorrect Answer
      D Warabandi Correct Answer Incorrect Answer

      Solution

      A watershed is a natural geo-hydrological unit of land that collects water and drains it through a common point via a system of streams. The Amazon Basin is the largest watershed in the world. For comparison:
      - A reservoir is a large lake where water is stored for use by a particular area or city
      - An aquifer is an underground layer of porous or permeable rocks that store and retain groundwater
      - Warabandi is a rotational water supply system based on predetermined schedules according to area and crop needs

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