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AGRICULTURE (15)
animal science , forest science , soils ...
LAND SURFACE (146)
erosion/sedimentation , frozen ground , geomorphology , land temperature , land use/land cover ...
ATMOSPHERE (51)
aerosols , air quality , altitude , atmospheric chemistry , atmospheric electricity ...
OCEANS (61)
bathymetry/seafloor topography , coastal processes , marine geophysics , ocean chemistry , ocean circulation ...
BIOLOGICAL CLASSIFICATION (7)
animals/invertebrates , animals/vertebrates ...
PALEOCLIMATE (27)
ice core records , land records , ocean/lake records , paleoclimate reconstructions ...
BIOSPHERE (34)
aquatic ecosystems , ecological dynamics , terrestrial ecosystems , vegetation ...
SOLID EARTH (19)
earth gases/liquids , geomagnetism , geomorphic landforms/processes , gravity/gravitational field , rocks/minerals/crystals ...
CLIMATE INDICATORS (3)
atmospheric/ocean indicators ...
SPECTRAL/ENGINEERING (17)
infrared wavelengths , radar , ultraviolet wavelengths , visible wavelengths ...
CRYOSPHERE (37)
frozen ground , glaciers/ice sheets , sea ice , snow/ice ...
SUN-EARTH INTERACTIONS (1)
solar activity ...
HUMAN DIMENSIONS (36)
boundaries , economic resources , environmental governance/management , environmental impacts , habitat conversion/fragmentation ...
TERRESTRIAL HYDROSPHERE (67)
glaciers/ice sheets , ground water , snow/ice , surface water , water quality/water chemistry ...

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