Across
- 2. The number of people, other living organisms, or crops that a region can support without environmental degradation.
- 3. Spread of individuals living in a given area
- 8. Organism that causes harm in a new environment
- 10. Movement of members of a population
- 11. Growth at a constant rate of increase per unit of time
- 12. Relationship in which both species benefit
- 13. Acto of feeding by a predator
Down
- 1. Environmental factor that tends to limit population size
- 4. measurement of individuals of a population per unit area or unit volume
- 5. Two or more individual organisms attempting to use the same scarce resources in the same ecosystem
- 6. Damaging change in the body's condition in response to destabilizing factors (nutrition, chemicals, biological agents)
- 7. The number of births at which people are just replacing themselves; replacement level of fertility
- 9. One organism derives nourishment at the expense of its host