Nature

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Across
  1. 5. Elevated landform with a peak.
  2. 6. Dense area of trees and vegetation.
  3. 8. Blooming plant with petals.
  4. 10. Colorful arc in the sky after rain.
Down
  1. 1. Cascading water feature.
  2. 2. Evening disappearance of the sun.
  3. 3. Morning appearance of the sun.
  4. 4. Natural flowing watercourse.
  5. 7. Arid region with little rainfall.
  6. 9. Vast body of saltwater.