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Topics
Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(6 items)
Culture and demographics
(3 items)
Earth characteristics
(309 items)
Health and disease
(2 items)
Human impacts
(26 items)
Information system design and development
(7 items)
Instrument design and development
(2 items)
Contamination and pollution
(36 items)
Natural resource exploration
(13 items)
Natural resource extraction
(12 items)
Natural resources
(57 items)
Organism groupings (non-taxonomic)
(4 items)
Organisms
(3 items)
Population and community ecology
(1 items)
Water properties
(15 items)
Water quality
(13 items)
Elements
(50 items)