INTERNATIONAL WATER DAY

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Across
  1. 2. A famous South American river that carries the most water in the world
  2. 4. A type of dam that produces electricity
  3. 9. A plastic material that often pollutes oceans
  4. 12. A large mass of frozen freshwater
  5. 13. The biggest ocean on Earth
  6. 14. The contamination of rivers, lakes, and oceans.
  7. 17. The process of treating sewage water so it can be reused
  8. 18. A serious problem caused by excessive water use in dry areas.
Down
  1. 1. Essential for life, covers 71% of the Earth.
  2. 3. A person who studies water and its movement
  3. 5. Famous international organization that promotes water conservation
  4. 6. The process of cleaning dirty water.
  5. 7. Water that people can drink safely
  6. 8. A large body of saltwater.
  7. 10. When water turns into vapor.
  8. 11. The major river running through Egypt
  9. 15. Essential gas dissolved in water for fish to survive.
  10. 16. Natural disaster caused by excessive rainfall