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(i) (a) Water is an elixir of life, a very important natural resource. Your Science teacher wants you to prepare a plan for a formative assessment activity, “How to save water, the vital natural resource”. Write any two ways that you will suggest to bring awareness in your neighbourhood, on ‘how to save water’. 

(b) Name and explain any one way by which the underground water table does not go down further. 

(ii) Explain two main advantages associated with water harvesting at the community level.

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(i) (a) Two ways of creating awareness are: 

  •  Door to door campaigning. 
  •  Nukkad natak/any other methods 

(b) Rain water harvesting: It is one of the most efficient method for recharging the underwater table. It is a process by which rain water is collected and stored to ensure recharging of aquifers. It can further be used for agriculture and irrigation. By this, we can reduce our dependence on storage dams. 

There are generally two ways of rainwater harvesting: Surface run off harvesting and rooftop rain water harvesting. 

(ii) Following are the advantages of water harvesting at the community level: 

(a) Water stored during rainy season can be used as and when required by the community. 

(b) Ground water level increases due to recharging.

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