Scenario | Items | Example |
---|---|---|
1 | 1–8 | Small subpopulation of land snails colonize a new island |
2 | 9–11 | Dung beetles geographically isolated by canals |
3 | 12–18 | Biologist randomly selects fruit flies to breed in captive populations |
4 | 19–22 | Nearsighted island population of humans before and after a devastating storm |