Across
- 1. The environment where a species lives; its home
- 3. All of the biotic and environmental factors in an area
- 4. Living factors
- 6. Another term for a population
- 9. All of the ecosystems on Earth capable of supporting life
- 10. The total number of one type of organism in an area
- 12. One member of a population
Down
- 2. Nonliving factors
- 5. All of the populations that live and interact in an area
- 7. The study of relationships between organisms and their physical environment
- 8. Another term for an individual
- 11. A region that includes multiple ecosystems