organic horizons

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• New Horizons Governor's School for Science and Technology — Location Hampton, Virginia, United States Information Type Magnet school Established 1985 The New Horizons Governor s School for Scienc …   Wikipedia

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• Primary Diagnostic Horizons — ▪ Table Primary diagnostic horizons of soil   U.S. Soil Taxonomy defining features FAO soil group system See as table: Epipedons   histic thick organic layer histic . mollic thick, dark, neutral to alkaline mollic ochric pale or thin ochric .… …   Universalium

• Gelisols — Gelisol a Gelisol profile Used in: USDA soil taxonomy Profile: OAC …   Wikipedia

• Hydnellum peckii — Bleeding tooth fungus Scientific classification Kingdom: Fungi …   Wikipedia

• Metal pesado — Para el género musical, véase heavy metal. Los metales pesados son un grupo de elementos químicos que presentan una densidad relativamente alta y cierta toxicidad para los seres humanos. El término metal pesado no está bien definido. A veces se… …   Wikipedia Español

• soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… …   Universalium

• Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock …   Wikipedia

• Soil horizon — Soil samples illustrating horizons (subsoil on right) A soil horizon is a specific layer in the land area that is parallel to the soil surface and possesses physical characteristics which differ from the layers above and beneath …   Wikipedia

• Canadian system of soil classification — The Canadian system of soil classification is more closely related to the American system than any other. They differ in several ways. The Canadian system is designed to cover only Canadian soils. The Canadian system dispenses with a sub order… …   Wikipedia

• Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …   Universalium