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  2. Freedom of speech - Wikipedia

    en.wikipedia.org/wiki/Freedom_of_speech

    Adopted in 1791, freedom of speech is a feature of the First Amendment to the United States Constitution. [17] The French Declaration provides for freedom of expression in Article 11, which states that: The free communication of ideas and opinions is one of the most precious of the rights of man.

  3. Climate change - Wikipedia

    en.wikipedia.org/wiki/Climate_change

    Oxfam found that in 2023 the wealthiest 10% of people were responsible for 50% of global emissions, while the bottom 50% were responsible for just 8%. Production of emissions is another way to look at responsibility: under that approach, the top 21 fossil fuel companies would owe cumulative climate reparations of $5.4 trillion over the period ...

  4. Percentile - Wikipedia

    en.wikipedia.org/wiki/Percentile

    Percentile. In statistics, a k-th percentile, also known as percentile score or centile, is a score below which a given percentage k of scores in its frequency distribution falls (" exclusive " definition) or a score at or below which a given percentage falls (" inclusive " definition). Percentiles are expressed in the same unit of measurement ...

  5. Intelligence quotient - Wikipedia

    en.wikipedia.org/wiki/Intelligence_quotient

    An intelligence quotient ( IQ) is a total score derived from a set of standardised tests or subtests designed to assess human intelligence. [1] The abbreviation "IQ" was coined by the psychologist William Stern for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at University of Breslau he advocated in ...

  6. Free trade - Wikipedia

    en.wikipedia.org/wiki/Free_trade

    Free trade is a trade policy that does not restrict imports or exports. In government, free trade is predominantly advocated by political parties that hold economically liberal positions, while economic nationalist and left-wing political parties generally support protectionism, the opposite of free trade.

  7. MyPlate - Wikipedia

    en.wikipedia.org/wiki/MyPlate

    MyPlate. MyPlate is the current nutrition guide published by the United States Department of Agriculture 's Center for Nutrition Policy and Promotion, and serves as a recommendation based on the Dietary Guidelines for Americans. [1] It replaced the USDA's MyPyramid guide on June 2, 2011, ending 19 years of USDA food pyramid diagrams.

  8. Buy one, get one free - Wikipedia

    en.wikipedia.org/wiki/Buy_one,_get_one_free

    Buy one, get one free. " Buy one, get one free " or " two for the price of one " is a common form of sales promotion. Economist Alex Tabarrok has argued that the success of this promotion lies in the fact that consumers value the first unit significantly more than the second one. So compared to a seemingly equivalent "Half price off" promotion ...

  9. Academic grading in the United States - Wikipedia

    en.wikipedia.org/wiki/Academic_grading_in_the...

    v. t. e. In the United States, academic grading commonly takes on the form of five, six or seven letter grades. Traditionally, the grades are A+, A, A−, B+, B, B−, C+, C, C−, D+, D, D− and F, with A+ being the highest and F being lowest. In some cases, grades can also be numerical. Numeric-to-letter-grade conversions generally vary from ...