inland drainage basins
111Western Africa — ▪ region, Africa Introduction region lying south of the Sahara and east and north of the Atlantic Ocean. It is latitudinally divided into two parallel belts of land: the western portion of the Sudan, a geographic area that stretches across… …
112Nile — For other uses, see Nile (disambiguation). Coordinates: 30°10′N 031°06′E / 30.167°N 31.1°E / 30.167; 31.1 …
113United Kingdom — a kingdom in NW Europe, consisting of Great Britain and Northern Ireland: formerly comprising Great Britain and Ireland 1801 1922. 58,610,182; 94,242 sq. mi. (244,100 sq. km). Cap.: London. Abbr.: U.K. Official name, United Kingdom of Great… …
114plate tectonics — plate tectonic, adj. Geol. a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past… …
115hydrologic sciences — Introduction the fields of study concerned with the waters of the Earth. Included are the sciences of hydrology, oceanography, limnology, and glaciology. In its widest sense hydrology encompasses the study of the occurrence, the… …
116Colombia — Colombian, adj., n. /keuh lum bee euh/; Sp. /kaw lawm byah/, n. a republic in NW South America. 37,418,290; 439,828 sq. mi. (1,139,155 sq. km). Cap.: Bogotá. * * * Colombia Introduction Colombia Background: Colombia was one of the three countries …
117Georgia — /jawr jeuh/, n. 1. a state in the SE United States. 5,464,265; 58,876 sq. mi. (152,489 sq. km). Cap.: Atlanta. Abbr.: GA (for use with zip code), Ga. 2. Also called Georgian Republic. a republic in Transcaucasia, bordering on the Black Sea, N of… …
118Water Resources Development Act of 1986 — The Water Resources Development Act of 1986 (WRDA 1986) is part of USPL|99|662, a series of acts enacted by Congress of the United States on November 17, 1986. [ [http://thomas.loc.gov/cgi bin/bdquery/D?d099:1:./temp/ bdVNjS:@@@D summ2=m… …
119Somerset Levels — The Somerset Levels (or Somerset Levels and Moors as they are less commonly, but more correctly, called) is a sparsely populated wetland area of central Somerset, England, between the Quantock and Mendip hills. They consist of marine clay levels… …
120Irrigation in Mexico — Mexico has a total land area of 2 million square kilometres and it is classified as an arid and semi arid country. The agricultural sector plays an important role in the economic development of the country accounting for 8.4 of agricultural gross …
