Across
- 3. What is the name of the muscle that holds an oyster shut?
- 7. What measures how acidic water is?
- 8. What is an aquatic animal that has two shells called?
- 9. What is a group of oysters growing together called?
- 11. What are organisms that hold an entire ecosystem together called?
- 13. What is the salt concentration in water called?
Down
- 1. What is the process by which oysters remove particles from water as they feed?
- 2. What type of animal is an oyster?
- 4. What is the cloudiness of water caused by particles floating in it called?
- 5. What do oyster reefs provide for small fish and crabs?
- 6. How many gallons of water can an oyster filter per day?
- 8. What helps protect shorelines by slowing down waves?
- 10. What structure do oysters use to breathe and filter food?
- 12. What do oysters use to protect their soft bodies?