Across
- 4. storm accompanied by thunder and rain
- 8. a dwarf planet
- 9. largest planet
- 11. motion of Earth around Sun
- 12. soil not fit for farming
- 13. group of stars
- 14. planting trees in large numbers
- 15. harmful substances present in air, water and land
Down
- 1. morning or evening star
- 2. pouring of clan water into another vessel
- 3. waste that can easily decompose
- 5. cutting down of trees in large numbers
- 6. largest ocean on Earth
- 7. days are longer in this season
- 10. falling of rain, snow, hail or sleet