Across
- 6. an area of land (such as a marsh or swamp) that is covered with shallow water
- 8. group of individuals of the same species living in a particular place
- 13. species threatened with extinction
- 16. a great body of salt water that covers much of the earth
- 17. a considerable inland body of standing water
- 20. a chain of rocks or coral or ridge of sand at the surface of water
- 21. it is any in the environment that is harmful to the health, survival, or activities of organisms
- 22. biological diversity
- 24. species that provide early warnings of damage to a community or an ecosystem
- 25. the sport or business of catching fish
- 26. universal solvent
Down
- 1. a hard material formed on the bottom of the sea by the skeletons of small creatures
- 2. one of the five large areas of salt water that cover much of the Earth's surface
- 3. species that plays a major role in shaping communities by creating and enhancing their habitats
- 4. tropical trees with roots growing from its branches, found in swamps or shallow salt water
- 5. management of natural resources by minimizing resource waste and sustaining resource supplies
- 7. swampy grasslands
- 9. too much fishing
- 10. a set of organisms interacting with one another and with their nonliving environment
- 11. populations of different species living and interacting in a particular
- 12. nontarget species
- 14. the protection that is provided by a safe place
- 15. species with a large effect on the types and abundances of other species in an ecosystem
- 18. group of organisms with distinctive traits
- 19. the average course or condition of the weather at a place usually over a period of years
- 23. a place for catching fish or taking other sea animals