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Categories
Topics
Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(73 items)
Contamination and pollution
(85 items)
Culture and demographics
(47 items)
Earth characteristics
(581 items)
Elements
(256 items)
Hazards
(2 items)
Health and disease
(6 items)
Human impacts
(40 items)
Information system design and development
(8 items)
Instrument design and development
(2 items)
Land use and land cover
(1 items)
Natural resource exploration
(79 items)
Natural resource extraction
(19 items)
Natural resources
(294 items)
Organism groupings (non-taxonomic)
(8 items)
Organisms
(6 items)
Population and community ecology
(1 items)
Water properties
(28 items)
Water quality
(19 items)
Water supply and demand
(1 items)
