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Hace 4 días · Russia,[b]or the Russian Federation,[c]is a country spanning Eastern Europeand North Asia. It is the largest country in the world by area, extending across eleven time zonesand sharing land borders with fourteen countries. [d]It is the world's ninth-most populous countryand Europe's most populous country. Russia is a highly urbanized country ...
Hace 1 día · The United States of America ( USA or U.S.A. ), commonly known as the United States ( US or U.S.) or America, is a country primarily located in North America. It is a federation of 50 states, a federal capital district ( Washington, D.C. ), and 326 Indian reservations.
- +1
- None at the federal level
Hace 1 día · Alzheimer's disease ( AD) is a neurodegenerative disease that usually starts slowly and progressively worsens, [2] and is the cause of 60–70% of cases of dementia. [2] [15] The most common early symptom is difficulty in remembering recent events. [1] .
- Over 65 years old
Hace 5 días · Cristiano Ronaldo dos Santos Aveiro GOIH ComM ( Portuguese pronunciation: [kɾiʃˈtjɐnu ʁɔˈnaldu] (born 5 February 1985), better known as Ronaldo, is a Portuguese professional footballer who plays as a forward. He is the captain of the Portuguese national team, and he is currently playing at Saudi Arabian football club Al Nassr .
Hace 5 días · The Global Positioning System broadcasts a very precise time signal based on UTC time. The surface of the Earth is split into a number of time zones. Standard time or civil time in a time zone deviates a fixed, round amount, usually a whole number of hours, from some form of Universal Time, usually UTC.
Hace 5 días · The Encyclopedia Britannica contains carefully edited articles on all major topics. It fits the ideal purpose of a reference work as a place to get started, or to refer back to as you read and write. The articles in Britannica are written by expert authors who are both identifiable and credible.
Hace 2 días · Asia ( / ˈeɪʒə / ⓘ AY-zhə, UK also / ˈeɪʃə / AY-shə) is the largest continent [note 1] [10] [11] in the world by both land area and population. [11] . It covers an area of more than 44 million square kilometers, [note 2] about 30% of Earth 's total land area and 8% of Earth's total surface area.
