{"thcode":3,"term":{"code":747,"name":"oases","parent":112,"scope":"Fertile, vegetated areas in the midst of a desert, where the water table has come close enough to the surface for wells and springs or seepages to exist, thus making them suitable for human habitation. [Glossary of Geology, 4th ed.]"},"uf":[],"bt":[{"code":112,"name":"biogeographic regions","parent":928,"scope":"Geographic regions characterized chiefly by the dominant forms of plant life and the prevailing climate. [Adapted from American Heritage Dic. of the English Language, 4th ed.]"},{"code":928,"name":"regions","parent":1,"scope":"(a) Large, indefinite portions of the earth's surface. (b) Specified districts or territories. (c) Areas of interest or activity; spheres. (d) Ecology. Parts of the earth characterized by distinctive animal or plant life. [Adapted from American Heritage Dic. of the English Language, 4th ed.]"},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[],"rt":[{"code":311,"name":"deserts","parent":112,"scope":"Regions rendered barren or partially barren by environmental extremes, especially by low rainfall. [USGS Circ 1048]"},{"code":525,"name":"hydrographic features","parent":1,"scope":"For natural bodies of water. For constructed waterways, reservoirs, and such, use 'hydrographic structures'."},{"code":1067,"name":"springs (hydrographic)","parent":1096,"scope":"Places where underground water flows naturally to the surface of the Earth. [USGS Feature Class Definitions <http:\/\/geonames.usgs.gov\/domestic\/feature_class.htm>]"}]}