1. USGS Thesaurus
Categories
topics
Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics
agriculture
biological and physical processes
contamination and pollution
culture and demographics
earth characteristics
effects of climate change
elements
field monitoring stations
hazards
health and disease
human impacts
information system design and development
instrument design and development
land use and land cover
map coordinate systems
natural resource exploration
natural resource extraction
natural resources
organism groupings (non-taxonomic)
organisms
planetary bodies
population and community ecology
recreation
scientific careers
water properties
water quality
water supply and demand
See also
(none)
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