Thomas water systems crossword

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Across
  1. 5. body of water surrounded by land
  2. 6. underground layer of water
  3. 7. a large body of salt water
  4. 8. important for clean drinking water
  5. 10. a moving body of fresh water
  6. 11. when we take water from rivers and lakes and use it to water crops
  7. 13. crops
  8. 14. largest lake in the world (2 words)
  9. 16. largest ocean in the world (2 words)
  10. 17. longest river
  11. 18. this is something we need to stop getting into our water
Down
  1. 1. a famous example of a American drainage basin (3 words)
  2. 2. provide food and home to millions of species
  3. 3. an extremely large mass of ice which moves slowly
  4. 4. oceans regulate this for the Earth
  5. 9. manages wheare water goes (2 words)
  6. 12. one of the Great lakes (2 words)
  7. 15. built to control the flow of rivers