Across
- 1. Safe to drink.
- 3. A blue planet.
- 6. Cutting down of trees.
- 8. A method of irrigation.
- 9. Maintaining for a long time.
- 10. Overflow of water on land.
Down
- 2. Very large water body on earth.
- 4. Natural source of water.
- 5. To check flood
- 7. Amount of rain falling at a place.