sciencet vocab

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Across
  1. 2. outer shell
  2. 5. all water
  3. 7. whether
  4. 9. plants absorb water
  5. 11. layer of gasses
  6. 14. living and nonliving
  7. 15. thickest layer
  8. 16. the natural process
Down
  1. 1. supports life
  2. 3. natural feature
  3. 4. the central
  4. 6. process of material
  5. 8. the portion of earth
  6. 10. the outer layer
  7. 12. relating to structure
  8. 13. output of a system is returned input