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  2. Temu (marketplace) - Wikipedia

    en.wikipedia.org/wiki/Temu_(marketplace)

    Temu is an online marketplace operated by the Chinese e-commerce company PDD Holdings. It offers heavily discounted consumer goods which are mostly shipped to consumers directly from China.

  3. Sun - Wikipedia

    en.wikipedia.org/wiki/Sun

    Why is the Sun's corona so much hotter than the Sun's surface? (more unsolved problems in astronomy) The temperature of the photosphere is approximately 6,000 K, whereas the temperature of the corona reaches 1,000,000–2,000,000 K. The high temperature of the corona shows that it is heated by something other than direct heat conduction from the photosphere. It is thought that the energy ...

  4. Amazon rainforest - Wikipedia

    en.wikipedia.org/wiki/Amazon_rainforest

    In 2022, about 20% of the Amazon rainforest has already been deforested and a further 6% was "highly degraded". Research suggests that upon reaching about 20–25% (hence 0–5% more), the tipping point to flip it into a non-forest ecosystem – degraded savannah – (in eastern, southern and central Amazonia) will be reached.

  5. Israel - Wikipedia

    en.wikipedia.org/wiki/Israel

    Israel, officially the State of Israel, is a country in the Southern Levant region of West Asia.It is bordered by Lebanon to the north, Syria to the northeast, Jordan to the east, the Red Sea to the south, Egypt to the southwest, the Mediterranean Sea to the west, and the Palestinian territories – the West Bank along the east and the Gaza Strip along the southwest.

  6. PayPal - Wikipedia

    en.wikipedia.org/wiki/PayPal

    Download QR code; Wikidata item; Print/export ... Apr 20, 2011 Where.com: $135M Apr 28, 2011 ... Paypal laid off hundreds of workers across US offices and moved jobs ...

  7. Fibonacci sequence - Wikipedia

    en.wikipedia.org/wiki/Fibonacci_sequence

    Fibonacci sequence. A tiling with squares whose side lengths are successive Fibonacci numbers: 1, 1, 2, 3, 5, 8, 13 and 21. In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci sequence are known as Fibonacci numbers, commonly denoted Fn .

  8. Hydrogen peroxide - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_peroxide

    Hydrogen peroxide ( H2O2) is a nonplanar molecule with (twisted) C 2 symmetry; this was first shown by Paul-Antoine Giguère in 1950 using infrared spectroscopy. [9] [10] Although the O−O bond is a single bond, the molecule has a relatively high rotational barrier of 386 cm −1 (4.62 kJ / mol) for rotation between enantiomers via the trans ...

  9. Unit 731 - Wikipedia

    en.wikipedia.org/wiki/Unit_731

    Unit 731 (Japanese: 731部隊, Hepburn: Nana-san-ichi Butai), short for Manchu Detachment 731 and also known as the Kamo Detachment: 198 and the Ishii Unit, was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that engaged in lethal human experimentation and biological weapons manufacturing during the Second Sino-Japanese War (1937–1945 ...

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