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EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > ANGIOSPERMS (FLOWERING PLANTS) > DICOTS
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EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE
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EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > PLANT SUCCESSION
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EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > ALPINE/TUNDRA
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EARTH SCIENCE > BIOSPHERE > TERRESTRIAL ECOSYSTEMS > SHRUBLAND/SCRUB
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EARTH SCIENCE > BIOSPHERE > VEGETATION > PLANT CHARACTERISTICS
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EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > ACTIVE LAYER
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EARTH SCIENCE > LAND SURFACE > FROZEN GROUND > ACTIVE LAYER
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EARTH SCIENCE > LAND SURFACE > FROZEN GROUND > PERIGLACIAL PROCESSES
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EARTH SCIENCE > LAND SURFACE > LANDSCAPE > LANDSCAPE PATTERNS
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EARTH SCIENCE > LAND SURFACE > SOILS > ORGANIC MATTER
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EARTH SCIENCE > LAND SURFACE > SOILS > SOIL HORIZONS/PROFILE
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FIELD SURVEY
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IN SITU/LABORATORY INSTRUMENTS > PROBES > SOIL DEPTH PROBE
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POINT
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TRANSECT
biota
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