sheet erosion
71Intermontane Plateaus — Physiographic regions of the U.S. Interior See:legend For purposes of description, the physical geography of the United States is split into several major physiographic divisions, one being the Intermontane Plateaus. Please refer to the Geography …
72Sea level rise — is an increase in sea level. Multiple complex factors may influence this change. Sea level has risen about 130 meters (400 ft) since the peak of the last ice age about 18,000 years ago. Most of the rise occurred before 6,000 years ago. From 3,000 …
73Mississippi River — For the river in Canada, see Mississippi River (Ontario). Coordinates: 29°09′04″N 89°15′12″W / 29.15111°N 89.25333°W / …
74Dam — This article is about structures for water impoundment. For other uses, see Dam (disambiguation). Hoover Dam, a concrete arch gravity dam in Black Canyon of the Colorado River. Lake Mead in the background is impounded by the dam …
75Geology of Tasmania — Tasmania has a varied geological history, with the world s biggest exposure of diabase, or dolerite. Rocks from the Neoproterozoic, Paleozoic and Mesozoic time periods appear. It is one of the few southern hemisphere areas glaciated during the… …
76Mount Edziza volcanic complex — Mount Edziza, one of the main volcanoes of the Mount Edziza volcanic complex Elevation …
77ARIDE (DOMAINE) — Le domaine aride se définit à partir de critères climatiques: il correspond aux régions du globe caractérisées par un bilan hydrique déficitaire résultant, pour l’essentiel, de l’insuffisance des précipitations par rapport aux prélèvements de… …
78Nonpoint source pollution — Muddy river polluted by sediment. Photo courtesy of United States Geological Survey. Nonpoint source (NPS) pollution refers to both water and air pollution from diffuse sources. Nonpoint source water pollution affects a water body from sources… …
79Geology of Great Britain — The Geology of Great Britain is hugely varied and complex, and gives rise to the wide variety of landscapes found across the islands. This varied geology has also meant that the island has been an important source for the formation of many… …
80Geology of England — The Geology of England is mainly sedimentary. The youngest rocks are in the south east around London, progressing in age in a north westerly direction. [ [http://www.soton.ac.uk/ imw/Geology Britain.htm Southampton University] retrieved 21/1/07]… …
