| Similarity | Rank | |
|---|---|---|
| desertification | 0.772 | 27119 |
| biota | 0.772 | 66177 |
| biosphere | 0.765 | 29495 |
| land-use | 0.760 | 20015 |
| habitat | 0.760 | 4730 |
| peatbog | 0.757 | 99210 |
| species-rich | 0.755 | 57871 |
| ecological | 0.745 | 7231 |
| eutrophication | 0.744 | 42648 |
| fauna | 0.742 | 9719 |
| estuarine | 0.738 | 44121 |
| siltation | 0.738 | 76239 |
| rain-forest | 0.737 | 59512 |
| overgrazing | 0.735 | 43790 |
| intertidal | 0.734 | 42671 |
| biogeochemical | 0.734 | 71552 |
| vegetation | 0.729 | 5804 |
| urban-industrial | 0.728 | 73761 |
| eco-system | 0.727 | 67167 |
| ecology | 0.726 | 8063 |
| phytoplankton | 0.725 | 28965 |
| biome | 0.724 | 60528 |
| wetland | 0.724 | 11020 |
| neotropics | 0.723 | 91133 |
| nitrogen-fixing | 0.722 | 66398 |