Across
- 3. water stored underground
- 6. comes from fertilizer and is harmful if in our water
- 12. a living thing that who's presence tells us that an ecosystem is healthy
- 13. when water falls to the earth from clouds
- 17. all of the water on earth
- 19. an ocean ecosystem where fresh and salt water meet.
- 20. when water moves along the surface towards a river
Down
- 1. where most of Earth's water is
- 2. when water goes from a gaseous state to a liquid state
- 4. when water goes underground
- 5. when water is lost from the leaves of plants
- 7. how cloudy water is
- 8. when nutrients in water cause excessive algae to grow and use up oxygen in the water
- 9. when water goes from a liquid to a gas
- 10. when surface water is displaced and nutrient rich water is brought up in the ocean
- 11. where most of Earth's freshwater is
- 14. type of water that has higher dissolved oxygen
- 15. a toxin that comes from fish waste
- 16. a measure of how acidic water is
- 18. an area of land that drains to 1 river
