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- Environmental conditions[remove]7
- Forest management2
- Acid deposition1
- Acid rain1
- Computer simulation1
- Conservation of natural resources1
- Ecosystem management1
- Environmental aspects1
- Environmental monitoring1
- Environmental policy1
- Forest ecology1
- Habitat1
- Intertidal ecology1
- Land use1
- Logging1
- Measurement1
- Models and modelmaking1
- Pollution1
- Restoration ecology1
- Spotted owl1