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Hace 4 días · Language is a structured system of communication that consists of grammar and vocabulary. It is the primary means by which humans convey meaning, both in spoken and written forms, and may also be conveyed through sign languages. Human language is characterized by its cultural and historical diversity, with significant variations observed ...
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. [j] Outside the union of states, it asserts sovereignty over five major unincorporated island territories and various ...
Hace 2 días · This is a list of the tallest people, verified by Guinness World Records or other reliable sources. According to the Guinness World Records, the tallest human in recorded history was Robert Wadlow of the United States (1918–1940), who was 272 cm (8 ft 11 in). He received media attention in 1939 when he was measured to be the tallest man in ...
Hace 2 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 including 16 population centers with over a million ...
Hace 4 días · Wi-Fi ( / ˈwaɪfaɪ /) [1] [a] is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves. These are the most widely used computer networks, used globally in home and small office networks to link devices and to provide ...
Hace 4 días · t. e. Hypertension, also known as high blood pressure, is a long-term medical condition in which the blood pressure in the arteries is persistently elevated. [11] High blood pressure usually does not cause symptoms itself. [1] It is, however, a major risk factor for stroke, coronary artery disease, heart failure, atrial fibrillation, peripheral ...
Hace 2 días · Comparisons of national income are also frequently made on the basis of purchasing power parity (PPP), to adjust for differences in the cost of living in different countries. ( see List of countries by GDP (PPP) per capita ). PPP largely removes the exchange rate problem but not others; it does not reflect the value of economic output in international trade, and it also requires more ...
