Subject
Climate
Geology
10
Statistics
10
Environment
9
Greenhouse gases
8
Carbon dioxide
7
Coastlines
7
Forests
7
Ocean currents
7
Tides
7
Botany
6
Coastal environment
6
Emissions
6
Freshwater environment
6
Landform evolution
6
Populations
6
Soils
6
Surface water
6
Tourism
6
Trade
6
Agriculture
5
Atlas
5
Demographics
5
Economic development
5
Employment
5
Exports
5
Fisheries
5
Forestry
5
Global warming
5
Industry
5
Labour
5
Manufacturing
5
Mineral industry
5
Terrestrial environment
5
Atmosphere
4
Conservation
4
Ecosystems
4
Production
4
Quaternary
4
Synthetic fuels
4
Air quality
3
Climatology
3
Coal
3
Ecology
3
Environmental aspects
3
Integrated Resource management
3
Marine environment
3
Meteorology
3
Sea level changes
3
Waves
3
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