| Similarity | Rank | |
|---|---|---|
| extinction | 0.885 | 15835 |
| speciation | 0.779 | 76081 |
| Pleistocene | 0.777 | 71860 |
| anthropogenic | 0.771 | 46957 |
| species' | 0.761 | 65327 |
| extinct | 0.733 | 18328 |
| catastrophes | 0.730 | 37343 |
| biota | 0.730 | 95999 |
| species | 0.730 | 1842 |
| acidification | 0.727 | 55426 |
| tsunamis | 0.723 | 54433 |
| amphibians | 0.722 | 38553 |
| hominids | 0.721 | 99822 |
| desertification | 0.720 | 69099 |
| droughts | 0.720 | 35142 |
| ecosystems | 0.714 | 13909 |
| Cretaceous | 0.713 | 59402 |
| predation | 0.713 | 44971 |
| pandemics | 0.712 | 81261 |
| cataclysmic | 0.712 | 53251 |
| perturbations | 0.710 | 77676 |
| habitats | 0.706 | 13856 |
| Holocene | 0.706 | 86928 |
| biosphere | 0.704 | 44340 |
| sea-level | 0.703 | 63584 |