Bringing Back Oysters

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Across
  1. 6. Sorts and transfers food from the gills to the digestive tract
  2. 8. The reefs help reduce erosion by blocking waves that can wash away sand and soil
  3. 10. Holds the two halves of the oysters shell together
  4. 12. They’re vital to their ecosystem
  5. 15. Pumps the oysters blood
  6. 16. Live in shallow waters around the world
  7. 17. Animals soft bodies are protected inside closed shells
  8. 18. Digests algae caught in the gills
  9. 20. Hard outer covering made of the mineral calcium carbonate that protects the oysters
  10. 22. Floating underwater
  11. 23. Surges Occur when rising water is pushed onto land, causing flooding
Down
  1. 1. Lost popularity
  2. 2. Removes dirty stuff from the water
  3. 3. pump water through their bodies, filtering out algae and bacteria to eat (see Inside an Oyster, below)
  4. 4. Skin-like covering that protects the oysters organs
  5. 5. To Measure growth of the mollusks
  6. 7. Washes away sand and oil
  7. 9. The loss of oysters
  8. 11. Filter oxygen, algae and particles from the water
  9. 13. Lifting up
  10. 14. A community of organisms interacting with their nonliving environment
  11. 19. Muscle Opens and closes the shell
  12. 21. Attach to the shells and grow into adults