| Similarity | Rank | |
|---|---|---|
| monitoring | 0.682 | 2296 |
| remote_sense | 0.674 | 21850 |
| environmental_management | 0.657 | 28442 |
| environmental_impact_assessment | 0.654 | 71392 |
| environmental_research | 0.649 | 90614 |
| environmental_assessment | 0.642 | 57539 |
| environmental_protection | 0.618 | 10347 |
| datum_acquisition | 0.615 | 73975 |
| environmental_datum | 0.595 | 81491 |
| sensor_network | 0.594 | 52003 |
| environmental_science | 0.588 | 21547 |
| waste_management | 0.584 | 16497 |
| risk_assessment | 0.583 | 10250 |
| pollution_control | 0.580 | 79900 |
| environmental_control | 0.578 | 98648 |
| water_resource_management | 0.577 | 64165 |
| emergency_response | 0.576 | 27614 |
| monitor_system | 0.576 | 56485 |
| water_quality | 0.576 | 8567 |
| monitoring_program | 0.575 | 79919 |
| chemical_analysis | 0.575 | 92246 |
| natural_resource_management | 0.572 | 33163 |
| datum_management | 0.564 | 31989 |
| wastewater_treatment | 0.564 | 51114 |
| oceanography | 0.562 | 46809 |