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54 Environmental Sciences
4
Alaska
4
Ecology
North America
4
Baseline Ecology
3
Beta Decay Radioisotopes
3
Beta-Minus Decay Radioisotopes
3
Isotopes
3
Nuclei
3
Radioisotopes
3
Usa
3
Arctic Ocean
2
Arctic Regions
2
Beaufort Sea
2
Carbon 14
2
Carbon Cycle
2
Carbon Isotopes
2
Cryosphere
2
Developed Countries
2
Ecosystems
2
Environmental Impacts
2
Even-Even Nuclei
2
Light Nuclei
2
Nitrogen Cycle
2
Plants
2
Polar Regions
2
Prudhoe Bay
2
Seas
2
Soils
2
Surface Waters
2
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