More specific terms
- NT climate
- NT climatic phenomenon
- NT ecosystem
- NT education for sustainable development
- NT electrical energy
- NT endangered species
- NT energy
- NT environment
- NT environmental protection
- NT forest
- NT forestry
- NT geophysical environment
- NT landscape
- NT national park
- NT natural resources
- NT noise
- NT nuclear energy
- NT nuclear physics
- NT ocean
- NT pollution
- NT port
- NT renewable energy
- NT sea
- NT waste management
- NT water
- NT watercourse