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  2. Alzheimer's disease - Wikipedia

    en.wikipedia.org/wiki/Alzheimer's_disease

    Alzheimer's disease is a neurodegenerative disease that causes dementia and affects memory, language, and other cognitive functions. Learn about the signs, stages, risk factors, diagnosis, and treatment of this condition that affects 50 million people worldwide.

  3. Mobile network codes in ITU region 3xx (North America)

    en.wikipedia.org/wiki/Mobile_network_codes_in...

    Montana; former Get Mobile Inc., [74] SmartCall, LLC; acquired by T-Mobile in 2017; [131] MNC withdrawn [100] 310: 310: T-Mobile: Not operational: GSM 1900: Formerly Aerial Communications [71] 310: 311: Farmers Wireless: Not operational: GSM 1900: NE Alabama; acquired by AT&T in 2008 310: 320: Cellular One: Smith Bagley, Inc. Operational: GSM ...

  4. Mobile operating system - Wikipedia

    en.wikipedia.org/wiki/Mobile_operating_system

    Learn about the history and features of mobile operating systems, such as Android, iOS, Windows, and Symbian. Find out which of the following mobile operating systems was designed to run on mobile devices from a wide variety of manufacturers: Android, iOS, Windows, or Symbian.

  5. Hydrogen vehicle - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_vehicle

    A hydrogen vehicle is a vehicle that uses hydrogen to move, such as some road vehicles, rockets, ships and aircraft. Learn about the advantages and disadvantages of hydrogen vehicles, the production and storage of hydrogen, and the history and market of hydrogen cars.

  6. ABBA - Wikipedia

    en.wikipedia.org/wiki/ABBA

    ABBA is a famous musical group formed in 1972 by four singers: Agnetha, Björn, Benny and Anni-Frid. They won the Eurovision Song Contest in 1974, had many hits and albums, and reunited in 2016 after 40 years.

  7. Air pollution - Wikipedia

    en.wikipedia.org/wiki/Air_pollution

    Air pollution is the contamination of air by harmful substances that affect human health and the environment. Learn about the different types of air pollutants, their sources (both natural and human-made), and their impacts on health, climate and ecosystems.