Across
- 2. A place where salt and fresh water meet.
- 4. swamp A coastal forest in the the tropics with trees that have branched roots.
- 6. Water containing filth from urban areas.
- 7. Groundwater stored in a subterranean formation.
- 10. The rate of how water flows through rock.
- 13. zone The most enriched area of all marine environments.
- 17. Microscopic organisms that serve as the main food source in aquatic environments.
- 20. water Water on the Earth's surface area.
- 21. Fish, turtle, seals, etc.
Down
- 1. An area of land drained by a river.
- 3. A special barrier that controls river flow.
- 5. Removal of salt salt water.
- 8. Water stored beneath the surface.
- 9. A body of water found at the rear of a dam.
- 10. Bacteria and protozoa that carry disease.
- 11. Provides plants with water from in indirect source.
- 12. Land that is mostly underwater.
- 14. Bottom-feeders such as sea cucumbers and snot worms.
- 15. Water thats safe for drinking.
- 16. zone The very bottom of marine environments where there is no light.
- 18. reef The Great Barrier Reef is the biggest of all.
- 19. island Stretch of land that protects the shore from erosion.