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22 Topic Pages Found in Environmental Sciences and starting with the letter S
Details List
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Open Sahara

Largest desert in the world, occupying around 9,065,000 sq km/3,500,000 sq mi of north Africa from the Atlantic to the Red Sea, with an interruption

Open Salt marshes
Salt marshes

The term salt marsh is primarily associated with a marsh or wetland located near the sea, although it may also be applied to inland marsh in arid

São Francisco River (Minas Gerais-Alagoas and Sergipe, Brazil)

From its headwater in the Serra da Canastra National Park in southern Minas Gerais , the São Francisco River (Ribeira de São Francisco) pursues a

Open Savannas

Introduction Savannahs are areas of tropical grassland. They are characterized by a continuous cover of grasses and may have a variety of other plant


[Lat. scientia=knowledge]. For many the term science refers to the organized body of knowledge concerning the physical world, both animate and

Open Seasons

divisions of the year characterized by variations in the relative lengths of day and night and in the amount of heat received from the sun. These


system for the removal and disposal of chiefly liquid wastes and of rainwater, which are collectively called sewage. The average person in the

Open Snake River (Wyo.-Wash.)
Snake River (Wyo.-Wash.)

River in northwest USA, the largest tributary of the Columbia River; 1,670 km/1,038 mi in length. Rising as the South Fork in a lake 2,375 m/7,790 ft

Open snow

precipitation formed by the sublimation of water vapor into solid crystals at temperatures below freezing. Sublimation resulting in the formation of

Open soil

surface layer of the earth, composed of fine rock material disintegrated by geological processes; and humus , the organic remains of decomposed