human systems and environment

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Across
  1. 3. dangerous wastes or dangerous things
  2. 6. floods still water rises and swallows land
  3. 8. creation of products
  4. 10. things found or produced in an area
  5. 11. rate of births every 1000 population
  6. 12. build up and discharge of electricity
  7. 13. takeing away something to make less wastes
  8. 15. harmful substances found in the envirorment
  9. 16. near equator
  10. 19. shaking of earth
  11. 20. flowing water rises
Down
  1. 1. lack of water
  2. 2. orriginate over atlantic
  3. 4. rate of deaths every 1000 population
  4. 5. rate of cooling with air movement
  5. 7. naturally occurring elements
  6. 9. orriginate over pacific
  7. 14. solid liquid or gas wastes that is poisenious
  8. 17. machines and tools that can make life easier
  9. 18. things people use