Q2 of 37 Page 115

List two advantages associated with water harvesting at the community level.

The advantages which are associated with the water harvesting at the community level are:


1. Harvesting of water fulfills the need of water throughout the year as Saved water can be used for various purposes. This ensures availability of water throughout the year.


2. Saving of water leds to availability of water to each and every one. Moreover, it led to moisture of land for vegetation growth thus beneficial for community.


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24

It is important to make small check dams across the flooded gullies because they

i. hold water for irrigation


ii. hold water and prevent soil erosion


iii. recharge ground water


iv. hold water permanently

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Prepare a list of five items that you use daily in the school. Identify from the list such items that can be recycled.

 3

In a village in Karnataka, people started cultivating crops all around a lake which was always filled with water. They added fertilizers to their field in order to enhance the yield. Soon they discovered that the water body was completely covered with green floating plants and fishes started dying in large numbers. Analyses the situation and give reasons for excessive growth of plants and death of fish in the lake.

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What measures would you take to conserve electricity in your house?