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  2. Sobrevivendo no Inferno - Wikipedia

    en.wikipedia.org/wiki/Sobrevivendo_no_Inferno

    Sobrevivendo no Inferno ("Surviving in Hell") is the second studio album of the Brazilian rap group Racionais MC's, released in December 1997. The album reached the mark of 1,500,000 copies sold, despite having been released by an independent record label. [ 1 ]

  3. Water distribution on Earth - Wikipedia

    en.wikipedia.org/wiki/Water_distribution_on_Earth

    Most water in Earth's atmosphere and crust comes from saline seawater, while fresh water accounts for nearly 1% of the total. The vast bulk of the water on Earth is saline or salt water, with an average salinity of 35‰ (or 3.5%, roughly equivalent to 34 grams of salts in 1 kg of seawater), though this varies slightly according to the amount of runoff received from surrounding land.

  4. Irrational number - Wikipedia

    en.wikipedia.org/wiki/Irrational_number

    Examples are e r and π r, which are transcendental for all nonzero rational r. Because the algebraic numbers form a subfield of the real numbers, many irrational real numbers can be constructed by combining transcendental and algebraic numbers. For example, 3 π + 2, π + √ 2 and e √ 3 are irrational (and even transcendental).

  5. Rational number - Wikipedia

    en.wikipedia.org/wiki/Rational_number

    In mathematics, "rational" is often used as a noun abbreviating "rational number". The adjective rational sometimes means that the coefficients are rational numbers. For example, a rational point is a point with rational coordinates (i.e., a point whose coordinates are rational numbers); a rational matrix is a matrix of rational numbers; a rational polynomial may be a polynomial with rational ...

  6. Non-revenue water - Wikipedia

    en.wikipedia.org/wiki/Non-revenue_water

    NRW is sometimes also referred to as unaccounted-for water (UFW). While the two terms are similar, they are not identical, since non-revenue water includes authorized unbilled consumption (e.g. for firefighting or, in some countries, for use by religious institutions) while unaccounted-for water excludes it. [8]

  7. Irrational exuberance - Wikipedia

    en.wikipedia.org/wiki/Irrational_exuberance

    Irrational exuberance" is the phrase used by the then-Federal Reserve Board chairman, Alan Greenspan, in a speech given at the American Enterprise Institute during the dot-com bubble of the 1990s. The phrase was interpreted as a warning that the stock market might be overvalued.

  8. Racionais MC's - Wikipedia

    en.wikipedia.org/wiki/Racionais_MC's

    The presentations continued and increasing impact of Racionais MC's beginning to extrapolate the boundaries of São Paulo. In 1997, a sort of 'DIY' (do it yourself) rap group inaugurates its own label Cosa Nostra Phonographic with the release of the album Sobrevivendo no Inferno (Surviving in Hell), selling over 1.5 million copies independently including the tracks' Diário de um Detento ...

  9. Water - Wikipedia

    en.wikipedia.org/wiki/Water

    Practically no sunlight reaches the parts of the oceans below 1,000 metres (3,300 ft) of depth. The refractive index of liquid water (1.333 at 20 °C (68 °F)) is much higher than that of air (1.0), similar to those of alkanes and ethanol , but lower than those of glycerol (1.473), benzene (1.501), carbon disulfide (1.627), and common types of ...