| Similarity | Rank | |
|---|---|---|
| Environment | 0.702 | 2978 |
| Environmental_Management | 0.696 | 46550 |
| Environmental | 0.695 | 12483 |
| Natural_Resources | 0.695 | 20910 |
| Water_Resources | 0.646 | 38831 |
| and_Sustainable_Development | 0.641 | 47267 |
| Environmental_Policy | 0.632 | 79363 |
| Conservation | 0.631 | 9022 |
| Pollution | 0.630 | 67166 |
| and_Natural_Resources | 0.620 | 30420 |
| environmental_protection | 0.619 | 10347 |
| Sustainable_Development | 0.610 | 30275 |
| Ecology | 0.609 | 19589 |
| Environmental_Protection_Agency | 0.606 | 91529 |
| Water_Quality | 0.602 | 57978 |
| Sustainability | 0.599 | 11115 |
| Air_Quality | 0.591 | 61690 |
| Forestry | 0.586 | 17303 |
| for_Sustainable_Development | 0.584 | 98709 |
| Environmental_Science | 0.582 | 32182 |
| Energy_Efficiency | 0.580 | 27741 |
| Environmental_Law | 0.575 | 91975 |
| Environmental_Education | 0.574 | 58738 |
| Resource_Management | 0.572 | 68724 |
| Environmental_Health | 0.572 | 41154 |