BIOLOGY FUN TIME!

4. Where a species lives and what it does for a living.
8. Any necessity of life.
11. The variety of environmental conditions within which a species can survive and reproduce.
14. Disturbance affects an existing community but does not completely destroy it.
16. Where many small organisms live in very small parts of a habitat.
17. A natural or human system's ability to recover after a disturbance.
20. The total of all genetically-based variations.
22. A series of somewhat predictable events that occur in a community over time.
23. Interdependent relationship between two species.

1. Benefits provided by ecosystems to humans.
2. No remnants of an older community.
3. No two species can occupy exactly the same niche.
5. The actual place an organism lives.
6. One organism lives inside or on another organism and harms it.
7. The variety of habitats, communities, and ecological processes in the biosphere.
9. The total of all different forms of genes present in a particular species.
10. The number of different species in the biosphere.
12. Natural events that disturb areas of varying size.
13. Both species benefit.
15. First species to colonize barren areas
18. Affects the size and distribution of plant populations.
19. Plays a vital and unique role in maintaining structure, stability, and diversity in an ecosystem.
21. One organism benefits and the other is neither helped nor harmed.