Across
- 5. close association between two or more species that live together
- 7. movement into a population
- 9. physical area in which an organism lives
- 11. factor that restricts the number, distribution, or reproduction of a population
- 12. factor that depends on the number of members of a population
- 13. the role of an organism in its environment
Down
- 1. factor that affects populations regardless of their density
- 2. movement away from a population
- 3. any living factor in an organism's environment
- 4. adaptations that allow an organism to blend in
- 6. adaptation in which one species evolves to resemble another
- 8. largest number an environment can support
- 10. a nonliving factor in an organism's environment