| dispute(noun, conflict, disagreement, difference, contention) |
| ecopsychologist(noun, nature, feature, environment) |
| elasticity(noun, nature, feature, environment) |
| employment(noun, occupation, profession, enterprise, affair) |
| emulous(adjective, person, trait, competitiveness) |
| exosystem(noun, nature, feature, environment) |
| extinction(noun, nature, feature, environment) |
| inertia(noun, nature, feature, environment) |
| macrosystem(noun, nature, feature, environment) |
| meeting(noun, company, group, band, team) |
| mesosystem(noun, nature, feature, environment) |
| microsystem(noun, nature, feature, environment) |
| militant(adjective, person, trait, competitiveness) |
| military conflict |
| nestedness(noun, nature, feature, environment) |
| overpopulation(noun, nature, feature, environment) |
| recycling(noun, nature, feature, environment) |
| resilience(noun, nature, feature, environment) |
| resistance(noun, nature, feature, environment) |
| reuse(noun, nature, feature, environment) |