Unit 4: Ecology

5. measures the number of individual organisms living in a defined space
6. non native species introduced to an ecosystem that negatively harms it
10. The process of ecological change in an ecosystem where one community is replaced by another community over time.
11. a group of organisms of the same species living in the same place
12. the amount of carbon emitted and its environmental impact
15. species the first organisms 5o grow in a new environment
16. the theoretical maximum population that a given environment could support
18. a mature and stable community of plants and animals
19. bigger impact on more dense populations
20. regulate population growth regardless of its size or density

1. curve graphic representation of mortality patterns.
2. Population grows quickly at first and the levels off
3. the normal warming effect when gasses trap heat in the atmosphere
4. aspects of the environment that limit the size a population can reach
7. a balance between Earth's resources human need and the needs of other species
8. formation of a brand new ecosystem
9. one that remain relatively constant with predictable changes
13. population grows without limit
14. living
17. nonliving
21. Occurs in an area that was previously occupied by living organisms