Water on Earth Crossword

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Across
  1. 1. 3% of earth's water is this
  2. 5. a collection of water underground that can be used and extracted
  3. 7. the measure of salt in a substance
  4. 10. a type of crustacean found in estuaries that filters the water by collecting toxins in their bodies
  5. 12. water from streams and creeks that collect at the nearest river
  6. 16. an area of land that stays wet for a portion of the year
  7. 18. the process where excess chemicals causes algal blooms that deplete the oxygen in water causing fish to die
  8. 20. part of the water cycle where rain, snow, sleet, or hail falls back to the ground
Down
  1. 2. where water evaporates from plants
  2. 3. an area where freshwater and saltwater mix
  3. 4. the largest estuary in NC
  4. 6. 97% of earth's water is this
  5. 8. part of the water cycle where water is heated by the sun and water droplets rise
  6. 9. the presence of plants and fish that are used to determine how healthy water is
  7. 11. a collection of the streams, lakes, river that eventually drain into the ocean
  8. 13. chemicals that farmers use that can easily runoff into water systems when it rains
  9. 14. part of the water cycle where rain drops cool and form clouds
  10. 15. where water runs across earth's surface
  11. 17. the measure of how clear or cloudy water is
  12. 19. the measure of how acidic or alkaline a substance is