9th Class Social Science Drainage Question Bank 9th CBSE Social Science Drainage

  • question_answer
      State some economic benefits of rivers and lakes.                      

    Answer:

                      Lake (i) Lakes help to regulate the flow of rivers. (ii) Lakes help to prevent flooding during rainy season. (iii) During the dry season, lakes help to maintain an even flow of water. (iv) Lakes can also be used for developing hydelpower. (v) Lakes provide opportunities for fishery development. (vi) They moderate the climate of the surroundings and maintain the acquaric ecosystem. (viii) They enhance natural beauty and help to develop tourism and provide recreation, e.g., Dal lake and Naini lake at Nainital. Rivers (i) They help to develop hydel power. (ii)They provide water for irrigation for drinking and other requirements. (iii) They help to develop fisheries.


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