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  1. en.wikipedia.org › wiki › TobaccoTobacco - Wikipedia

    Tobacco is the common name of several plants in the genus Nicotiana of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the chief commercial crop is N. tabacum. The more potent variant N. rustica is also used in some countries.

  2. en.wikipedia.org › wiki › CRISPRCRISPR - Wikipedia

    CRISPR (⫽ˈkrɪspər⫽) (an acronym for clustered regularly interspaced short palindromic repeats) is a family of DNA sequences found in the genomes of prokaryotic organisms such as bacteria and archaea.[2] These sequences are derived from DNA fragments of bacteriophages that had previously infected the prokaryote. They are used to detect ...

  3. en.wikipedia.org › wiki › Hong_KongHong Kong - Wikipedia

    Hong Kong [e] is a special administrative region of the People's Republic of China. With 7.4 million residents of various nationalities [f] in a 1,104-square-kilometre (426 sq mi) territory, Hong Kong is one of the most densely populated territories in the world. Hong Kong was established as a colony of the British Empire after the Qing dynasty ...

  4. en.wikipedia.org › wiki › UNESCOUNESCO - Wikipedia

    The United Nations Educational, Scientific and Cultural Organization ( UNESCO; pronounced / juːˈnɛskoʊ /) [1] [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.

  5. en.wikipedia.org › wiki › PeruPeru - Wikipedia

    Peru, [e] officially the Republic of Peru, [f] is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pacific Ocean.

  6. en.wikipedia.org › wiki › SerbiaSerbia - Wikipedia

    Serbia,[c] officially the Republic of Serbia,[d] is a landlocked country at the crossroads of Southeast and Central Europe,[8][9] located in the Balkans and the Pannonian Plain. It borders Hungary to the north, Romania to the northeast, Bulgaria to the southeast, North Macedonia to the south, Croatia and Bosnia and Herzegovina to the west, and ...

  7. Probability theory. In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is The parameter is the mean or expectation of the distribution (and also its median and mode ), while ...

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