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  2. Pareto principle - Wikipedia

    en.wikipedia.org/wiki/Pareto_principle

    The Pareto principle may apply to fundraising, i.e. 20% of the donors contributing towards 80% of the total. The Pareto principle (also known as the 80/20 rule, the law of the vital few and the principle of factor sparsity [1] [2]) states that for many outcomes, roughly 80% of consequences come from 20% of causes (the "vital few").

  3. United States twenty-dollar bill - Wikipedia

    en.wikipedia.org/wiki/United_States_twenty...

    The United States twenty-dollar bill (US$20) is a denomination of U.S. currency.A portrait of Andrew Jackson, the seventh U.S. president (1829–1837), has been featured on the obverse of the bill since 1928; the White House is featured on the reverse.

  4. A complete guide to the very best Labor Day sales on ... - AOL

    www.aol.com/lifestyle/the-very-best-labor-day...

    The Best Labor Day Sales this year includes great deals such as a $65 mattress, a $20 set of sheets and 20% off Amazon bestselling pillows. Browse all of the deals available this Labor Day.

  5. Hexanitrohexaazaisowurtzitane - Wikipedia

    en.wikipedia.org/wiki/Hexanitrohexaazaisowurtzitane

    In August 2011, Adam Matzger and Onas Bolton published results showing that a cocrystal of CL-20 and TNT had twice the stability of CL-20—safe enough to transport, but when heated to 136 °C (277 °F) the cocrystal may separate into liquid TNT and a crystal form of CL-20 with structural defects that is somewhat less stable than CL-20.

  6. Harmonized System - Wikipedia

    en.wikipedia.org/wiki/Harmonized_System

    HS code 1006.30, for example, indicates Chapter 10 (Cereals), heading 10.06 (Rice), and subheading 1006.30 (Semi-milled or wholly milled rice, whether or not polished or glazed). In addition to the HS codes and commodity descriptions, each Section and Chapter of the HS is prefaced by Legal Notes, which are designed to clarify the proper ...

  7. Photosynthesis - Wikipedia

    en.wikipedia.org/wiki/Photosynthesis

    Joseph Priestley, a chemist and minister, discovered that when he isolated a volume of air under an inverted jar and burned a candle in it (which gave off CO 2), the candle would burn out very quickly, much before it ran out of wax. He further discovered that a mouse could similarly "injure" air. He then showed that a plant could restore the ...

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