Nature

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Across
  1. 2. - A large landform that rises above its surroundings.
  2. 4. - A low area of land between hills or mountains.
  3. 6. - A natural flowing watercourse.
  4. 7. - A colorful plant part that produces seeds.
  5. 11. - A colorful arc in the sky caused by sunlight and rain.
  6. 12. - A natural underground hollow or passage.
  7. 15. - A large landform that rises above its surroundings.
  8. 16. - A tall plant with a trunk and branches.
  9. 17. - A vast body of saltwater that covers most of the Earth's surface.
Down
  1. 1. - An insect with colorful wings that undergoes metamorphosis.
  2. 3. - A large body of water surrounded by land.
  3. 5. - A warm-blooded vertebrate that has feathers and can fly.
  4. 8. - A cascade of water falling from a height.
  5. 9. - The star at the center of our solar system.
  6. 10. - A large area covered with trees and plants.
  7. 11. - A solid mineral material forming part of the Earth's crust.
  8. 12. - A visible mass of condensed water vapor in the atmosphere.
  9. 13. - A small body of still water.
  10. 14. - A sandy or pebbly area by the seaside.
  11. 15. - Earth's natural satellite that orbits around it.