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PALINDROME

Make the palindrome of the following letters: D, D, E, E, M, M, N, N, O, O, O, O, P, P, R, R, R, R, S, S, S, S, T, T, T, T, U, U, U, U

Correct answers: 31

The first user who solved this task is Roxana zavari.

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Demetri Martin: Cool Leather

I was at a party the other night, and I saw a guy wearing a leather jacket, and I thought, That is cool. Like 10 minutes later, I saw a guy wearing a leather vest and I thought, That is not cool. Thats when I realized cool is all about leather sleeves.

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Sergey Nikolayevich Winogradsky

Born 1 Sep 1856; died 25 Feb 1953 at age 96.Russian microbiologist who helped to establish bacteriology as a major biological science. He was first to isolate the bacteria responsible for nitrification and nitrogen fixation by soil bacteria (1890).Winogradsky also studied bacteria that recycle other vital elements for use by other organisms - including ‘iron bacteria', and those which metabolize sulfur (1887-9) - deriving metabolic energy from inorganic nutrients. Previously, only organic substrates were considered suitable for microbes. The "Winogradsky column" is still used as an enrichment culture that simulates the muddy habitat of anoxygenic photosynthetic bacteria.[Name also spelled Sergei or Sergius.]

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