EARTH AND EARTH SUBSYSTEMS

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Across
  1. 2. the layer of the earth's
  2. 5. A large mass of ice moving slowly over land
  3. 11. partially molten layer
  4. 12. lower layer of the atmosphere
  5. 13. middle layer of the atmosphere
  6. 14. water
  7. 15. long term changes in the earth's climate
  8. 16. A community of living organisms
  9. 17. The natural process
  10. 20. outermost layer, merging with outer space
Down
  1. 1. living things
  2. 3. A natural flowing body of water
  3. 4. the variety of life
  4. 6. air
  5. 7. earth's crust
  6. 8. planets interior
  7. 9. land
  8. 10. the earth's ice
  9. 18. high temperature layer of the atmosphere
  10. 19. A large, natural elevation of the earth's surface