Human Dependence on Natural Resources

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Across
  1. 1. soil and rock layers
  2. 5. a planet
  3. 6. The sum of all
  4. 8. in its abundance in the environment; if it is
  5. 10. intervention
  6. 11. The layer of gas
  7. 14. Resource A source or
  8. 15. is held in place by
  9. 17. can be used
  10. 20. then the organisms that need it cannot
  11. 22. Resource Something that is needed by organisms and is not
  12. 23. power to
Down
  1. 2. Process Any natural process that happens to Earth’s surface,
  2. 3. Water that collects in cracks and pores in
  3. 4. matter on
  4. 7. of energy
  5. 9. Resources Resources that exist in the environment without
  6. 12. Replaceable by natural means in a short period of
  7. 13. people’s
  8. 16. Not replaceable by natural means within a short
  9. 18. of time
  10. 19. as weathering, erosion, or plate tectonics
  11. 21. generate