Across
- 4. The maximum number of specimens a species can hold in an ecosystem
- 7. When humans take too much from an environment
- 9. The dependency organisms have on each other in an environment
- 10. An organism's role in an ecosystem
- 11. A manmade underwater environment
- 14. The study of ecosystems
- 15. A nonliving thing
- 19. The ability for a species to stay alive
- 21. When pollutants runoff and make their way to a different place
- 24. A collection of organisms interacting with each other in an environment
- 26. The different organisms in an ecosystem
- 27. The number of organisms a species has
- 28. Organisms fighting over a thing
Down
- 1. a living thing
- 2. An organism that makes its own energy
- 3. Changing to an environment
- 5. When pollutants are directly left in a place
- 6. The idea that the strongest organism survives and passes on its good genes
- 8. The slight changes in an organisms DNA from their parent's
- 12. Items like food or water that help organisms survive
- 13. A group of organisms that rely on each other
- 16. When a species is reproducing to a dangerous level
- 17. When stuff like water makes it way to a different place
- 18. An organism that gets its energy from other organsims
- 20. A model that shows the movement of energy in an ecosystem
- 22. Parts of organisms that help them survive
- 23. Behavior an organism picks up during its life, not from birth
- 25. Something that keeps a species from reproducing more