{"thcode":2,"term":{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},"uf":[],"bt":[{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[{"code":24,"name":"agriculture","parent":1174,"scope":"The science and business of soil cultivation to raise crops and of animal husbandry to raise domesticated animals."},{"code":101,"name":"biological and physical processes","parent":1174,"scope":"All continuing activities, functions, and phenomena associated with organisms and non-living matter."},{"code":769,"name":"contamination and pollution","parent":1174,"scope":"Introduction of harmful substances into the environment by human action or natural processes."},{"code":223,"name":"culture and demographics","parent":1174,"scope":"Information on human behavior, ways of living and thinking, and characteristics of human populations."},{"code":287,"name":"earth characteristics","parent":1174,"scope":"The measurable, definable properties and features of the earth."},{"code":485,"name":"effects of climate change","parent":1174,"scope":"Characteristics and behaviors of organisms and earth systems that are modified as a result of changes in global, regional, or local climate."},{"code":1382,"name":"elements","parent":1174,"scope":"Chemical elements and element groups"},{"code":531,"name":"hazards","parent":1174,"scope":"Potential dangers from both natural processes (e.g., earthquakes, floods, and climate change) and human impacts on the environment."},{"code":533,"name":"health and disease","parent":1174,"scope":"Normal and abnormal conditions of plant and animal bodies.  Covers both human and non-human health and disease topics. For human health and disease, use the narrower term 'environmental health (human)'."},{"code":548,"name":"human impacts","parent":1174,"scope":"The effects, intentional or unintentional, beneficial or harmful, direct or indirect, which human activities have upon the environment and living things."},{"code":587,"name":"information system design and development","parent":1174,"scope":"Use for the design and development of information systems.  Do not use for general cases in which information systems are part of the activity."},{"code":594,"name":"instrument design and development","parent":1174,"scope":"Includes the design and development of software for a particular instrument."},{"code":628,"name":"land use and land cover","parent":1174,"scope":"The vegetation, water, natural surface, and cultural features on the land surface."},{"code":692,"name":"map coordinate systems","parent":1174,"scope":"Systems using sets of numbers combined with geometric nets or grids to specific positions on a map or globe."},{"code":774,"name":"natural resource exploration","parent":1174,"scope":"Techniques for locating deposits or stocks of useful minerals, water, and other resources using reconnaissance or instrumental methods."},{"code":775,"name":"natural resource extraction","parent":1174,"scope":"Removal of natural materials or properties (such as heat) for use."},{"code":777,"name":"natural resources","parent":1174,"scope":"Stocks of anything naturally occurring that have a beneficial use for man including economic, nutritional, recreational, aesthetic, and other benefits."},{"code":841,"name":"organism groupings (non-taxonomic)","parent":1174,"scope":"Used for categories of living organisms that are not taxonomic and that include species from more than one taxonomic group."},{"code":843,"name":"organisms","parent":1174,"scope":"Living individuals that grow, reproduce, and die."},{"code":900,"name":"planetary bodies","parent":1174,"scope":"Large celestial masses of rock, metal, or gas orbiting around a star.  Use for extraterrestrial bodies."},{"code":921,"name":"population and community ecology","parent":1174,"scope":"Interactions of a single species (population) or an association of different species (community) occupying a particular region, including their biotic and abiotic environments."},{"code":1352,"name":"recreation","parent":1174,"scope":"Pursuit of leisure-time activities, typically out of doors."},{"code":1020,"name":"scientific careers","parent":1174,"scope":"Professions in which people carry out or support scientific research or monitoring."},{"code":1304,"name":"water properties","parent":1174,"scope":"Measurable physical and chemical characteristics of water from different sources."},{"code":1306,"name":"water quality","parent":1174,"scope":"The chemical, physical, and biological characteristics of water, usually in respect to its suitability for a particular purpose."},{"code":1311,"name":"water supply and demand","parent":1174,"scope":"The quantities of water resources in an area that are easily available and the amount of water that is needed for all uses."}],"rt":[]}