Water and Ecosystems

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Across
  1. 1. Movement of nutrient-rich waters into the ocean
  2. 4. Marine life that lives on the ocean floor
  3. 6. An area where a group of organisms interacts
  4. 8. The concentration of salts in water
  5. 9. Area where an organism lives
  6. 10. An organism that makes its own food
  7. 12. A path that energy takes from one organism to another
Down
  1. 2. Microscopic organisms that float on the ocean's surface
  2. 3. Marine animals that actively swim
  3. 5. Gets it energy from other organisms
  4. 7. Areas where fresh water mixes with salt water
  5. 11. Releases nutrients back into the ecosystem