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CONTINENT >
7
FIELD SURVEYS
7
GEOGRAPHIC REGION >
7
POLAR
environment
7
CRYOSPHERE
6
EARTH SCIENCE
6
FIELD INVESTIGATION
6
BIOLOGICAL CLASSIFICATION
5
MICROALGAE
5
SEA ICE
5
oceans
5
ANTARCTICA >
4
Casey
4
PLANTS
4
biota
4
ice core
4
AMD
3
AMD/AU
3
ANTARCTICA
3
CEOS
3
LIGHT TRANSMISSION
3
PRIMARY PRODUCTION
3
sea ice algae
3
AIR TEMPERATURE
2
ATMOSPHERE
2
ATMOSPHERIC TEMPERATURE
2
BIOSPHERE
2
CARBON
2
CHLOROPHYLL
2
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