Across
- 4. measurement of water's clarity or cloudiness
- 5. measurements of water's acidity of basicity
- 7. type of aquatic animal that filters food from the water
- 9. layer of ocean where sunlight barely reaches
- 10. process by which aquatic plants and animals adapt to changing water temperatures
- 11. type of aquatic ecosystem with a mix of fresh and saltwater
- 15. largest living structure on earth
- 16. type of fish that migrate from saltwater to freshwater to spawn
- 17. type of fish that live in both fresh and saltwater
- 18. type of wave caused by earthquakes or landslides
- 19. process by which plants make food from sunlight
Down
- 1. ocean's surface layer where most photosynthesis occurs
- 2. type of freshwater ecosystem with slow-moving water
- 3. type of aquatic animal that has a backbone
- 4. freshwater source that flowers into a larger body of water
- 6. ocean's deepest zone
- 8. aquatic plant that provides food and shelter for aquatic life
- 12. process by which water moves through a plant and is released into the air
- 13. aquatic plant that grows on rocks or other surfaces
- 14. aquatic animal with a shell and tentacles