Bring Back Oysters

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Across
  1. 1. A tool, similar to a ruler, that measures the growth of things
  2. 5. What pumps blood in a living body
  3. 7. A part of the body of a oyster the sorts and transfers food of from the gills to the digestive tract
  4. 10. Surges When rising water is pushed onto land, causing a flood
  5. 11. When animals grow on top of one another
  6. 14. A part of the body of a oyster that filters oxygen, algae, and particles from the water
  7. 15. Waves that wash away sand and soil
  8. 20. Animals that are vital to the ecosystem
  9. 23. What opens and closes as a shell
  10. 24. Pulling something up with ropes
  11. 25. Holds the two halves of an oyster's shell together
Down
  1. 2. A hard outer covering
  2. 3. Digest algae caught in gills for this animal
  3. 4. A type of oyster
  4. 6. Feeders Animals that cleans/remove pollution by eating.
  5. 8. The immature form of an animal
  6. 9. Something rare or expency
  7. 12. environment in which it becomes extinct due to human fault
  8. 13. Environmental contamination
  9. 16. Extreme harvest
  10. 17. Skin-like covering that protects the oyster’s organs
  11. 18. Endangered, put at risk
  12. 19. An animal who has a delicate body living of a shell
  13. 21. Being under water
  14. 22. A community of organism interacting with their nonliving environment