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54 Environmental Sciences
2
Carbon Dioxide
2
Plants
2
Tundra
2
Air Pollution Abatement
1
Arctic Regions
1
Boreal Regions
1
Carbon Sinks
1
Climate Models
1
Climatic Change
1
Ecological Concentration
1
Ecosystems
1
Environmental Effects
1
Nutrients
1
Organic Matter
1
Oxidation
1
Permafrost
1
Photosynthesis
1
Progress Report
1
Response Functions
1
Seasonal Variations
1
Surface Air
1
Terrestrial Ecosystems
1
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