Across
- 1. largest estuary in the U.S.
- 4. Informal term for a large group of photosynthetic eukaryotic organisms
- 7. a land area that channels water to rivers
- 11. the leaves that spread out above the trees
- 12. A river or stream flowing into a larger body of water
- 14. Lots of plants collected together
- 16. A bar of oysters
- 17. A distinct ecosystem that is flooded by water
- 18. a biological community of interacting organisms and their physical environment
- 19. A substance that pollutes something
Down
- 2. A large number of fish swimming together
- 3. Matter that settles to the bottom of a liquid
- 5. A substance that provides nourishment essential for growth
- 6. a 39 mile river in central Maryland
- 8. partially enclosed coastal body of water
- 9. Descend below the surface of water
- 10. a measure of how far down light can penetrate through the water column
- 13. relating to water
- 15. Different types