1. | The introduction of exotic species into a native ecosystem |
2. | The occurrence of a species in a specific geographic area |
3. | The extinction of species in a given geographic area |
4. | The migration of species within a continental area |
1. | 4 | 2. | 8 |
3. | 12 | 4. | 17 |
I: | The first aquarium has more species diversity than the second aquarium. |
II: | Over time, the community within second aquarium will be more stable than first aquarium. |