Geography

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Across
  1. 3. splits the earth in half
  2. 4. shift in tectonic plates
  3. 10. seasonal movement
  4. 11. physical or metaphorical barrier
  5. 12. navigation tool
  6. 13. large ice chunk
Down
  1. 1. raised, level platform
  2. 2. less populated region
  3. 5. flat, arctic region
  4. 6. receding land
  5. 7. a large community of flora and fauna
  6. 8. city and greater vicinity
  7. 9. waterlogged, low-lands