| Title | Comment | Keywords |
|---|---|---|
| Method of Evolution | 21:48 - 23:23 (01:35) / 1.7 MB | "Jamie Webb", fossil, "Rancho La Brea", Cenozoic, life, horse, evolution, ecosystem, woodland, grassland, environment, habitat, "Charles Darwin" |
| Natural Selection | 23:23 - 23:55 (00:32) / 1.1 MB | "Charles Darwin", animal, evolution |
| Punctuated Equilibrium | 23:55 - 25:29 (01:34) / 2.5 MB | "Stanley Aramic", "Charles Darwin", evolution, fossil, "intermediate species", "punctuated equilibrium", environment |