The water puzzle

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Across
  1. 5. majority Earth's water is saltwater in oceans
  2. 6. change Warmer temperatures cause water to
  3. 8. water long distances can also be dangerous
  4. 9. of people is large and clean water is
  5. 12. world's population experiences severe water
Down
  1. 1. keeps water clean for people
  2. 2. all places in the world have good clean
  3. 3. water is a good way to save water
  4. 4. water that goes into the ground but will
  5. 7. is essential for life
  6. 10. billion people living in water-scarce areas
  7. 11. technologies are helping us save people