NATURE

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Across
  1. 2. Radiant energy from the sun
  2. 3. Grassland area with wildflowers
  3. 4. Elevated land smaller than a mountain
  4. 8. Flower's state of flowering
  5. 10. Plant leaves collectively
  6. 12. Small still body of water
  7. 14. Deep narrow valley with steep sides
  8. 15. Arid and dry land with little rainfall
  9. 16. Natural underground hollow
  10. 17. Optical and meteorological phenomenon
  11. 19. Small flowerless plant
  12. 21. Lush tropical woodland with heavy rainfall
  13. 23. Low area between hills or mountains
  14. 25. Marine ecosystem with diverse life
  15. 26. Sandy or pebbly shore by the sea
  16. 27. Shell of a marine mollusk
  17. 28. Flowing water descending a rock face
  18. 29. Light from the moon
Down
  1. 1. Animals living in their natural habitat
  2. 5. Thick cloud near the ground
  3. 6. Dense area of trees and vegetation
  4. 7. Inland body of water
  5. 9. High landmass with peaks
  6. 11. Blooming plant reproductive structure
  7. 13. Large body of saltwater
  8. 18. Gentle wind
  9. 20. Daily disappearance of the sun
  10. 22. Natural flowing watercourse
  11. 24. Large mass of ice and snow
  12. 27. Light from distant stars