1.

Fill up the blanks: 1. _____ plays a vital role in the evolution and survival of life. 2. _____ is present in the air around us. 3. In the distribution of total 0.3% of surface water, _____ have 87% surface water. 4. The molecular formula of water is _____ 5. The oceanic volcanoes which are present inside also add _____ to the sea. 6. Every year _____ is observed as the world water day. 7. The water vapour gets cooled and changes into tiny water droplets that form _____ in the sky. 8. A larger portion of water is _____ % of the total available fresh water in frozen state.9. Water level in the reservoirs is measured in _____ 10. Adoption of _____ and irrigation in agriculture.

Answer»

1. Water 

2. Vapour 

3. Lakes 

4. H2

5. Salt 

6. March 22nd 

7. Clouds 

8. 68.7 

9. Cubic feet per second (cusecs) 

10. Drip, Sprinkler



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