| Similarity | Rank | |
|---|---|---|
| human_activity | 0.714 | 16002 |
| terrestrial_ecosystem | 0.709 | 98125 |
| human_impact | 0.693 | 82966 |
| climatic_change | 0.688 | 79774 |
| land_use_change | 0.682 | 61668 |
| biota | 0.675 | 81008 |
| eutrophication | 0.649 | 69479 |
| global_climate_change | 0.648 | 29854 |
| aquatic_ecosystem | 0.633 | 62506 |
| ecosystem_function | 0.627 | 92822 |
| natural_ecosystem | 0.626 | 62077 |
| habitat_loss | 0.626 | 50927 |
| natural_process | 0.620 | 47228 |
| biodiversity_loss | 0.619 | 86453 |
| habitat_destruction | 0.614 | 88499 |
| species_diversity | 0.611 | 91262 |
| acidification | 0.610 | 76521 |
| ecological_system | 0.608 | 67262 |
| marine_ecosystem | 0.608 | 35001 |
| climate_variability | 0.606 | 91277 |
| species_richness | 0.605 | 87127 |
| global_warming | 0.600 | 5979 |
| speciation | 0.599 | 57755 |
| pollutant | 0.599 | 14162 |
| forest_ecosystem | 0.598 | 65758 |