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  2. 8 hours ago · World Health Organization: Dengue symptoms include fever, headaches, vomiting, skin rashes, as well as muscle and joint pain. In some cases, it can cause a more severe hemorrhagic fever, resulting ...

  3. 8 hours ago · a) Tar. b) Carbon Monoxide. c) Nicotine. d) Ash. Answer: c) Explanation: The Centre for Disease Control and Prevention mentions: “Nicotine is the main addictive drug in tobacco that makes ...

  4. en.wikipedia.org › wiki › Unit_731Unit 731 - Wikipedia

    13 hours ago · 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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