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The Columbian exchange, also known as the Columbian interchange, was the widespread transfer of plants, animals, precious metals, commodities, culture, human populations, technology, diseases, and ideas between the New World (the Americas) in the Western Hemisphere, and the Old World (Afro-Eurasia) in the Eastern Hemisphere, in the late 15th and following centuries.
The leader–member exchange ( LMX) theory is a relationship-based approach to leadership that focuses on the two-way ( dyadic) relationship between leaders and followers. [1] The latest version (2016) of leader–member exchange theory of leadership development explains the growth of vertical dyadic workplace influence and team performance in ...
Metabolism (/ m ə ˈ t æ b ə l ɪ z ə m /, from Greek: μεταβολή metabolē, "change") is the set of life-sustaining chemical reactions in organisms.The three main functions of metabolism are: the conversion of the energy in food to energy available to run cellular processes; the conversion of food to building blocks of proteins, lipids, nucleic acids, and some carbohydrates; and the ...
Women's empowerment (or female empowerment) may be defined in several ways, including accepting women's viewpoints, making an effort to seek them and raising the status of women through education, awareness, literacy, and training. [1] [2] [3] Women's empowerment equips and allows women to make life-determining decisions through the different ...
Subtropics. The subtropical zones or subtropics are geographical and climate zones to the north and south of the tropics. Geographically part of the temperate zones of both hemispheres, they cover the middle latitudes from 23°26′10.0″ (or 23.43612°) to approximately 35° north and south. The horse latitudes lie within this range.
J’Élle Stainer. The subcontrabass saxophone is the largest of the family of saxophones that Adolphe Sax described in his 1846 patent. He called it the saxophone bourdon, named after the very low-pitched 32′ bourdon pedal stop on large pipe organs. Although Sax planned to build one, the first playable instrument was only built in 2010.
Narco-submarine. A narco-submarine (also called a drug sub or narco-sub) is a type of custom ocean-going, self-propelled, semi-submersible or fully- submersible vessel built by (or for) drug smugglers. [2] [3] [4] Newer semi-submersibles are "nearly-fully" submersible in order to reduce likelihood of detection by visual, radar, sonar, or ...
The nuclear-powered Project 949A Antey (Oscar II class) submarine K-141 Kursk sank in an accident on 12 August 2000 in the Barents Sea. It was taking part in the first major Russian naval exercise in more than 10 years. All 118 personnel on board were killed.