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Aluminium ( Aluminum in North American English) is a chemical element; it has symbol Al and atomic number 13. Aluminium has a density lower than that of other common metals, about one-third that of steel. It has a great affinity towards oxygen, forming a protective layer of oxide on the surface when exposed to air. Aluminium visually resembles silver, both in its color and in its great ability ...
Sigma ( / ˈsɪɡmə / SIG-mə; [1] uppercase Σ, lowercase σ, lowercase in word-final position ς; Greek: σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase Σ is used as an operator for summation. When used at the end of a letter-case word (one that does not use all caps ), the final form (ς ...
Greenland ( Greenlandic: Kalaallit Nunaat, pronounced [kalaːɬːit nʉnaːt]; Danish: Grønland, pronounced [ˈkʁɶnˌlænˀ]) is a North American autonomous territory [14] of the Kingdom of Denmark. [15] It is the larger of two autonomous territories within the Kingdom, the other being the Faroe Islands; the citizens of both territories are ...
Amyotrophic lateral sclerosis ( ALS ), also known as motor neurone disease ( MND) or Lou Gehrig's disease in the United States, is a rare but terminal neurodegenerative disorder that results in the progressive loss of both upper and lower motor neurons that normally control voluntary muscle contraction. [3] ALS is the most common form of the ...
Signature. Greta Tintin Eleonora Ernman Thunberg ( Swedish pronunciation: [ˈɡrêːta ˈtʉ̂ːnbærj] ⓘ; born 3 January 2003) is a Swedish environmental activist known for challenging world leaders to take immediate action to mitigate the effects of human-caused climate change. [1] Thunberg's climate activism began when she persuaded her ...
England is the origin of the English language, the English legal system (which served as the basis for the common law systems of many other countries), association football, and the Anglican branch of Christianity; its parliamentary system of government has been widely adopted by other nations. [9] The Industrial Revolution began in 18th-century England, transforming its society into the world ...
Jonathan Yeo (born 18 December 1970, [1]) is a British artist of contemporary portraiture who was educated at Westminster School. He rose to prominence for having painted Kevin Spacey, Dennis Hopper, and Cara Delevingne, among others. GQ described him as "one of the world's most in-demand portraitists."
