Search results
Results from the WOW.Com Content Network
A Vavilov center or center of origin is a geographical area where a group of organisms, either domesticated or wild, first developed its distinctive properties. [1] They are also considered centers of diversity. Centers of origin were first identified in 1924 by Nikolai Vavilov.
The Kulturkreis (roughly, "culture circle" or "cultural field") school was a central idea of the early 20th-century German school of anthropology that sought to redirect the discipline away from the quest for an underlying, universal human nature toward a concern with the particular histories of individual societies.
English: Map of the world showing approximate centres of origin of agriculture and its spread in prehistory: eastern USA (4000-3000 BP), Central Mexico (5000-4000 BP), Northern South America (5000-4000 BP), sub-Saharan Africa (5000-4000 BP, exact location unknown), the Fertile Crescent (11000 BP), the Yangtze and Yellow River basins (9000 BP) and the New Guinea Highlands (9000-6000 BP).
The Earth-centered, Earth-fixed coordinate system (acronym ECEF), also known as the geocentric coordinate system, is a cartesian spatial reference system that represents locations in the vicinity of the Earth (including its surface, interior, atmosphere, and surrounding outer space) as X, Y, and Z measurements from its center of mass.
A primary ossification center is the first area of a bone to start ossifying. It usually appears during prenatal development in the central part of each developing bone. In long bones the primary centers occur in the diaphysis/shaft and in irregular bones the primary centers occur usually in the body of the bone. Most bones have only one ...
In 1988, the Israeli botanist Daniel Zohary and the German botanist Maria Hopf formulated their founder crops hypothesis. They proposed that eight plant species were domesticated by early Neolithic farming communities in Southwest Asia (Fertile Crescent) and went on to form the basis of agricultural economies across much of Eurasia, including Southwest Asia, South Asia, Europe, and North ...
Although there is no archaeological evidence for early cowpea cultivation, the centre of diversity of the cultivated cowpea is West Africa, leading an early consensus that this is the likely centre of origin and place of early domestication. [26]
A Certificate of Origin or Declaration of Origin (often abbreviated to C/O, CO or DOO) is a document widely used in international trade transactions which attests that the product listed therein has met certain criteria to be considered as originating in a particular country. A certificate of origin / declaration of origin is generally prepared ...