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2. Respirator - Wikipedia

   en.wikipedia.org/wiki/Respirator

   There are two main categories of respirators: the air-purifying respirator, in which respirable air is obtained by filtering a contaminated atmosphere, and the air-supplied respirator, in which an alternate supply of breathable air is delivered. Within each category, different techniques are employed to reduce or eliminate noxious airborne ...

3. 25 (number) - Wikipedia

   en.wikipedia.org/wiki/25_(number)

   25 is the sum of the five consecutive single-digit odd natural numbers 1, 3, 5, 7, and 9. 25 is a centered octagonal number, [1] a centered square number, [2] a centered octahedral number, [3] and an automorphic number. [4] 25 percent (%) is equal to ⁠ 1 / 4 ⁠. It is the smallest decimal Friedman number as it can be expressed by its own ...

4. Ozone - Wikipedia

   en.wikipedia.org/wiki/Ozone

   Ozone generators sold as air cleaners intentionally produce the gas ozone. [43] These are often marketed to control indoor air pollution, and use misleading terms to describe ozone. Some examples are describing it as "energized oxygen" or "pure air", suggesting that ozone is a healthy or "better" kind of oxygen. [43]

5. English Spot - Wikipedia

   en.wikipedia.org/wiki/English_Spot

   A black English Spot. The English Spot is a breed of domestic rabbit that was developed in England in the 19th century through selective breeding.Averaging 5 to 8 pounds in weight, the English Spot is a medium-sized breed that is most noted by the distinctive colored markings on its body, including the butterfly nose marking, eye circles, cheek spots, herringbone, colored ears, and a chain of ...

6. 25 - Wikipedia

   en.wikipedia.org/wiki/25

   Download QR code; Print/export Download as PDF; Printable version; In other projects ... Twenty-Five or 25 may refer to: 25 (number) one of the years 25 BC, AD 25 ...

7. Pierre Dufour - Pay Pals - The Huffington Post

   data.huffingtonpost.com/paypals/pierre-dufour

   From May 2010 to December 2012, if you bought shares in companies when Pierre Dufour joined the board, and sold them when he left, you would have a -1.2 percent return on your investment, compared to a 18.6 percent return from the S&P 500.