Ecology Crossword

3. all parts of Earth in which life exists
5. organisms that rely on other organisms for energy and nutrients
16. the study of nature and the organisms that live in it
18. what an organism does and how it interact with its environment
20. the way individuals are spaced out across their range
22. the sunlit region near the surface of open water
24. all organisms that live in a place, together with their physical environment
25. any living part of the environment
26. a series of organisms in which energy is transferred from one organism to another in a straight line
27. the first producers of energy-rich compounds
29. the actual place an organism lives

1. a group of similar organisms that can breed
2. the total amount of living tissue within a given trophic level
4. matter flows from one trophic level to another, and the elements are recycled within and among ecosystems
6. organisms that cannot create their own food and instead must consume energy
7. the portion of open water that does not receive sunlight; photosynthesis cannot occur
8. a variety of different populations that live together in a defined area
9. the maximum number of individuals of a perticular species that a particular environment can support
10. any factor that controls the growth of a population
11. individual organisms move out of an area
12. a series of somewhat predictable events that occur in a community over time
13. the number of individuals that can be found per unit area
14. each step or level in a food chain/web
15. any non-living part of the environment
17. a network of feeding interactions through which matter and energy move
19. an interdependent relationship between two species
21. organisms that can create their own food by converting energy
23. individual organisms move into an area from somewhere else
28. a group of individuals that belong in the same species and populate the same area