Across
- 4. heats thermal vents
- 6. An area of waterlogged soil that tends to be peaty; fed mainly by ground water
- 7. the type of organisms most marine communities depend on
- 10. what islands protect the shore from storms?
- 15. zone where emergent plants grow in the bottom sediment
- 16. type of tree that lives in shallow salt water
- 17. A bay or drowned valley where a river empties into the sea
- 19. what cycle provides all the freshwater available for biological life?
- 20. zones that comprise the water column in a body of water
- 22. Prominent oceanic features composed of hard, limy skeletons produced by coral animals (two words)
- 24. Ecosystems where rooted vegetation is surrounded by standing water during part of the year
- 25. what are tiny, free-floating photosynthetic plants?
Down
- 1. upper layer of a lake that is mixed by wind and warmed by the sun
- 2. this zone is the deepest layer of the ocean
- 3. A wetland with trees
- 5. this affects the amount of oxygen that can be absorbed in water
- 8. what contributes to the distribution of biological productivity?
- 9. dead organisms in the ocean that sink toward the ocean floor (two words)
- 11. what ecosystem is a drier area around wetlands?
- 12. a distinctive temperature transition zone that separates an upper layer that is mixed by the wind and a colder, deep layer
- 13. bottom of a sea or lake
- 14. Wetland without trees
- 18. An area of waterlogged soil that tends to be peaty; fed mainly by precipitation, some are acidic
- 21. Whitening of corals caused by expulsion of symbiotic algae
- 23. bacteria that doesn’t use oxygen