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Hö'elün (fl. 1162–1210) was a Mongolian noblewoman and the mother of Temüjin, better known as Genghis Khan.She played a major role in his rise to power. Born into the Olkhonud clan of the Onggirat tribe, Hö'elün was originally married to Chiledu, but was captured shortly after her wedding by Yesügei, an important member of the Mongols, becoming his primary wife.
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. [9] It is mainly used as a eugeroic ( wakefulness promoter) or as a mild cognitive enhancer to increase alertness and attentional performance. [10] [11] Caffeine acts by blocking binding of adenosine to the adenosine A 1 receptor, which enhances release of the ...
- C₈H₁₀N₄O₂
- 45 minutes–1 hour
The Human Development Index ( HDI) is a statistical composite index of life expectancy, education (mean years of schooling completed and expected years of schooling upon entering the education system ), and per capita income indicators, which is used to rank countries into four tiers of human development. A country scores a higher level of HDI ...
The United Nations Educational, Scientific and Cultural Organization ( UNESCO) [a] is a specialized agency of the United Nations (UN) with the aim of promoting world peace and security through international cooperation in education, arts, sciences and culture. [2] [3] It has 194 member states and 12 associate members, [4] as well as partners in ...
Mark Elliot Zuckerberg (/ˈzʌkərbɜːrɡ/; born May 14, 1984) is an American businessman. He co-founded the social media service Facebook, along with his Harvard roommates in 2004, and its parent company Meta Platforms (formerly Facebook, Inc.), of which he is chairman, chief executive officer and controlling shareholder. Zuckerberg briefly ...
The BBC is a state owned public broadcasting company and operates under a royal charter.The charter is the constitutional basis for the BBC, and sets out the BBC's Object, Mission and Public Purposes. It emphasises public service, (limited) editorial independence, prohibits advertising on domestic services and proclaims the BBC is to "seek to avoid adverse impacts on competition which are not ...
Wikipedia, a free-content online encyclopedia written and maintained by a community of volunteers known as Wikipedians, began with its first edit on 15 January 2001, two days after the domain was registered. [2] It grew out of Nupedia, a more structured free encyclopedia, as a way to allow easier and faster drafting of articles and translations.
