natural seeding
111Beijing — Peking redirects here. For other uses, see Peking (disambiguation). Beijing 北京   Municipality   Municipality of Beijing • 北京市 …
112Heinrich Cotta — Johann Heinrich Cotta (October 30, 1763 October 25, 1844) was a German silviculturist who was a native of Kleine Zillbach, near Wasungen, Thuringia. He was the father of geologist Bernhard von Cotta (1808 1879).Cotta initially learned forestry… …
113List of clinical research topics — Clinical research is the aspect of biomedical research that addresses the assessment of new pharmaceutical and biological drugs, medical devices and vaccines in humans. Contents 1 General topics 2 Drug terminology 3 T …
114Siembra de nubes — La siembra de nubes puede ser hecha por generadores en tierra, aviones, o cohetes (este último no se muestra en la imagen). La siembra de nubes es una forma de manipulación del clima. Es el intento de cambiar la cantidad o el tipo de… …
115carbohydrate — /kahr boh huy drayt, beuh /, n. any of a class of organic compounds that are polyhydroxy aldehydes or polyhydroxy ketones, or change to such substances on simple chemical transformations, as hydrolysis, oxidation, or reduction, and that form the… …
116silver — silverer, n. silverish, adj. silverless, adj. silverlike, adj. silverness, n. /sil veuhr/, n. 1. Chem. a white, ductile metallic element, used for making mirrors, coins, ornaments, table utensils, photographic chemicals, conductors, etc. Symbol:… …
117Silver — /sil veuhr/, n. Abba Hillel /ab euh/, 1893 1963, U.S. rabbi, born in Lithuania. * * * I Metallic chemical element, one of the transition elements, chemical symbol Ag, atomic number 47. It is a white, lustrous precious metal, valued for its beauty …
118magnetohydrodynamic power generator — ▪ physics Introduction any of a class of devices that generate electric power by means of the interaction of a moving fluid (usually an ionized gas or plasma) and a magnetic field. Magnetohydrodynamic (MHD) power plants offer the potential… …
119Clearcutting in British Columbia — When logging began in British Columbia, Canada, in the late 19th century, the overriding concern was to harvest timber in the most economical fashion. Reforestation, aesthetics and protection of fish and wildlife habitat were not issues of great… …
120Road — This article is about a route, thoroughfare or way that supports travel by a means of conveyance. For a place outside a harbor where a ship can lie at anchor, see Roadstead. For public roads, see Highway. For other routes, see thoroughfare. For… …
