Subject
environmental policy
climatic impact
14
greenhouse effect
13
climatic change
12
environmental impact
11
environmental protection
10
environmental impact assessment
9
energy environment balance
8
environmental balance
8
environmental pollution
8
energy policy
7
environmental compatibility
6
environmental impact statement
6
environmental monitoring
6
environmental program
6
climate modification
5
climatic effect
5
energy consumption
5
environmental engineering
5
social policy
5
energy model
4
energy production
4
environmental education
4
environmental law
4
sociological aspect
4
carbon dioxide production
3
emission
3
environmental research
3
environmental significance
3
political aspect
3
social science
3
socioeconomic aspect
3
soil protection
3
agricultural use
2
area planning
2
carbon dioxide
2
energy balance
2
energy economy
2
energy research
2
energy system analysis
2
environmental effect
2
environmental physics
2
environmental quality
2
erosion
2
global change
2
industry
2
methane
2
nitrous oxide
2
risk communication
2
road traffic
2
more ...