Marine and Freshwater Ecosystems

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Across
  1. 3. containing salt.
  2. 4. The area of water closest to the edge of a pond.
  3. 6. A continuous body of surface water flowing within the bed and banks of a channel.
  4. 10. A large body of water surrounded by land.
  5. 11. The region of the ocean that is extremely deep and typically far from coastal regions.
  6. 12. The region of ocean that exists above the continental shelf.
  7. 14. An area where fresh water from rivers mixes with salt water from the ocean.
  8. 17. The zone of a pond or lake below the open-water zone, where no light reaches.
  9. 21. pertaining to water ecosystems.
Down
  1. 1. In this zone, the land is covered by water for part of the day and submerged for the part of the day.
  2. 2. Using sunlight to synthesis energy and food from carbon dioxide and water.
  3. 5. Organisms that live on the ocean floor.
  4. 7. The zone of a pond or lake that extends from the littoral zone and that is only as deep as light can reach.
  5. 8. Organisms that live in the water column.
  6. 9. An area of land that is periodically underwater or whose soil contains a great deal of moisture.
  7. 13. Tiny organisms that float or drift freely near the surface of the freshwater or and marine environments.
  8. 15. The depth of water in which light cannot reach.
  9. 16. A treeless wetland ecosystem where plants such as grasses grow.
  10. 18. The depth of water in which light can reach
  11. 19. A wetland ecosystem in which shrubs and trees grow.
  12. 20. source of energy for photosynthetic organisms.