floating+depth
31Cave diving — is a type of technical diving in which specialized SCUBA equipment is used to enable the exploration of natural or artificial caves which are at least partially filled with water. It is an extension of the more common sport of caving, but is much …
32Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… …
33Steamboats of the Mississippi — GeographyThe Mississippi is one of the world’s great rivers. It spans 3860 miles of length as measured using its northernmost west fork, the Missouri River, which starts in the Rocky Mountains in Montana, joining the Mississippi proper in the… …
34environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …
35Avatar (2009 film) — Avatar …
36Sudd — Swamp from space, May 1993. This photograph was taken during the driest time of year summer rains generally extend from July through September. The Sudd (Arabic سد, sad, barrier ), also known as the Bahr al Jabal, As Sudd or Al Sudd, is a vast… …
37Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
38Lake Titicaca — View of the Lake from the Bolivian shore. Coordinates …
39Swimming pool — A swimming pool, swimming bath, wading pool, or simply a pool, is an artificially enclosed body of water intended for swimming or water based recreation. There are many standard sizes; the largest and deepest is the Olympic size. A pool can be… …
40isostasy — /uy sos teuh see/, n. 1. Geol. the equilibrium of the earth s crust, a condition in which the forces tending to elevate balance those tending to depress. 2. the state in which pressures from every side are equal. Also, isostacy. [1885 90; ISO +… …
