Across
- 2. Filters oxygen, algae and other particles
- 6. Sorts and transfers food from the gills to the digestive tract
- 7. Overdo harvesting to cause the habitat loss
- 9. Holds two halves of the oysters shell together
- 12. An organ that pumps blood
- 14. To be extinct
- 19. A closed shell
- 20. bivalve mollusk whose shell is made up of two halves connected by a hinge
- 22. To help reduce erosion
- 23. To destroy by natural resources
- 24. Sorts and transfers food from the gills to the digestive tract
- 25. An organ that digests
Down
- 1. To pump water to their bodies and clean bacteria and algae
- 3. Immature form of an animal
- 4. A dish served to people
- 5. Lifting up
- 8. underwater
- 10. a community of organisms interacting with their nonliving environment
- 11. Hard outer covering made of the mineral calcium carbonate that protects the oyster
- 13. Opens and closes the shell
- 15. When rising water is pushed onto the land
- 16. To be vital to their ecosystem
- 17. A tool used to measure the growth
- 18. Harmful substance
- 21. Something that is harmed a lot and is put at risk