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Anarchism is a political philosophy and movement that is sceptical of authority and rejects all involuntary, coercive forms of hierarchy. Anarchism calls for the abolition of the state, which it holds to be unnecessary, undesirable, and harmful. As a historically left-wing movement, placed on the farthest left of the p...	Anarchism is a political philosophy and movement that is sceptical of authority and rejects all involuntary, coercive forms of hierarchical body, and has a strong historical association with anti-capitalism	Anarchism is a political philosophy and movement that is sceptical of authority and rejects all involuntary, coercive forms of hierarchy. Anarchism calls for the abolition of the state, which it holds to be unnecessary, undesirable, and harmful. As a historically left-wing movement, placed on the farthest left of the p...
Autism is a neurodevelopmental disorder characterized by difficulties with social interaction and communication, and by restricted and repetitive behavior. Parents often notice signs during the first three years of their child's life. These signs often develop gradually, though some autistic children experience regress...	Autism spectrum disorder (ASD) is a highly variable neurodevelopmental disorder whose symptoms first appear during infancy or childhood, and generally follows a steady course without a diagnosis of autism spectrum disorder or a cure for it.	Autism is a neurodevelopmental disorder characterized by difficulties with social interaction and communication, and by restricted and repetitive behavior. Parents often notice signs during the first three years of their child's life. These signs often develop gradually, though some autistic children experience regress...
Albedo (; ) is the measure of the diffuse reflection of solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that reflects all incident radiation. Surface albedo is defined as the ratio of radio...	Albedo refers to the diffuse reflection of solar radiation out of the total solar radiation and measured on a scale from 0 to 1, corresponding to a body that reflects all incident radiation. Due to measurement constraints, it is often given for the spectrum in which most solar energy reaches the surface	Albedo (; ) is the measure of the diffuse reflection of solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that reflects all incident radiation. Surface albedo is defined as the ratio of radios...
A, or a, is the first letter and the first vowel of the modern English alphabet and the ISO basic Latin alphabet. Its name in English is a (pronounced ), plural aes. It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, c...	A is the first letter and the first vowel of the modern English alphabet and the ISO basic Latin alphabet. It is similar in shape to the Ancient Greek letter alpha, from which it derives. The ancient Greeks adopted the alphabet, they had no use for a letter to represent the glottal stop—the consonant sound	A, or a, is the first letter and the first vowel of the modern English alphabet and the ISO basic Latin alphabet. Its name in English is a (pronounced ), plural aes. It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, c...
Alabama () is a state in the Southeastern region of the United States, bordered by Tennessee to the north; Georgia to the east; Florida and the Gulf of Mexico to the south; and Mississippi to the west. Alabama is the 30th largest by area and the 24th-most populous of the U.S. states. With a total of of inland waterway...	American Civil War, in part due to agriculture and a few cash crops being the main driver of the states economy. During the antebellum period, Alabama was a major producer of cotton, and widely used African American slave labor. In 1861, the state seceded	Alabama () is a state in the Southeastern region of the United States, bordered by Tennessee to the north; Georgia to the east; Florida and the Gulf of Mexico to the south; and Mississippi to the west. Alabama is the 30th largest by area and the 24th-most populous of the U.S. states. With a total of of inland waterways...
In Greek mythology, Achilles ( ) or Achilleus () was a hero of the Trojan War, the greatest of all the Greek warriors, and is the central character of Homer's Iliad. He was the son of the Nereid Thetis and Peleus, king of Phthia. Achilles' most notable feat during the Trojan War was the slaying of the Trojan prince He...	Achilles' name can be analyzed as a combination of "distress, pain, sorrow, grief" and "people, soldiers, nation", resulting in a proto-form *Akh -l u	In Greek mythology, Achilles ( ) or Achilleus () was a hero of the Trojan War, the greatest of all the Greek warriors, and is the central character of Homer's Iliad. He was the son of the Nereid Thetis and Peleus, king of Phthia. Achilles' most notable feat during the Trojan War was the slaying of the Trojan prince Hec...
Abraham Lincoln (; February 12, 1809 – April 15, 1865) was an American lawyer and statesman who served as the 16th president of the United States from 1861 until his assassination in 1865. Lincoln led the nation through the American Civil War and succeeded in preserving the Union, abolishing slavery, bolstering the fed...	Abraham Lincoln's assassination in 1865. He reentered politics in 1854, becoming a leader in the new Republican Party, and he reached a national audience in the 1858 debates against Stephen Douglas.	Abraham Lincoln (; February 12, 1809 – April 15, 1865) was an American lawyer and statesman who served as the 16th president of the United States from 1861 until his assassination in 1865. Lincoln led the nation through the American Civil War and succeeded in preserving the Union, abolishing slavery, bolstering the fed...
Aristotle (; Aristotélēs, ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Lyceum, the Peripatetic school of philosophy, and the Aristotelian tradition. His writings cover many subjects including physics, biology, zoology, meta...	Aristotle's views profoundly shaped medieval scholarship. The influence of physical science extended from Late Antiquity and the Early Middle Ages into the Renaissance, and were not replaced systematically until the Enlightenment and theories such as classical mechanics were developed.	Aristotle (; Aristotél<unk>s, ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Lyceum, the Peripatetic school of philosophy, and the Aristotelian tradition. His writings cover many subjects including physics, biology, zoology, m...
An American in Paris is a jazz-influenced orchestral piece by American composer George Gershwin first performed in 1928. It was inspired by the time that Gershwin had spent in Paris and evokes the sights and energy of the French capital during the Années folles. Gershwin scored the piece for the standard instruments o...	An American in Paris is a jazz-influenced orchestral piece by American composer George Gershwin first performed in 1928. It was inspired by the time that Gershew had spent in Paris and evokes the sights and energy of the French capital during the Années folles	An American in Paris is a jazz-influenced orchestral piece by American composer George Gershwin first performed in 1928. It was inspired by the time that Gershwin had spent in Paris and evokes the sights and energy of the French capital during the Années folles. Gershwin scored the piece for the standard instruments of...
The Academy Award for Best Production Design recognizes achievement for art direction in film. The category's original name was Best Art Direction, but was changed to its current name in 2012 for the 85th Academy Awards. This change resulted from the Art Director's branch of the Academy of Motion Picture Arts and Scien...	The Academy Award for Best Production Design recognizes achievement for art direction in film. The award's original name was Best Art Direction, but was changed to its current name in 2012 for the 85th Academy Awards. This change resulted from the Art Director's branch of the Academy of Motion Picture Arts and Sciences...	The Academy Award for Best Production Design recognizes achievement for art direction in film. The category's original name was Best Art Direction, but was changed to its current name in 2012 for the 85th Academy Awards. This change resulted from the Art Director's branch of the Academy of Motion Picture Arts and Scien...
The Academy Awards, popularly known as the Oscars, are awards for artistic and technical merit in the film industry. They are regarded by many as the most prestigious and significant awards in the entertainment industry worldwide. Given annually by the Academy of Motion Picture Arts and Sciences (AMPAS), the awards are...	The first Academy Awards ceremony was held on May 16, 1929, at a private dinner function at The Hollywood Roosevelt Hotel with an audience of about 270 people. The post-awards party was held at the Mayfair Hotel with satellite location taking place at the	The Academy Awards, popularly known as the Oscars, are awards for artistic and technical merit in the film industry. They are regarded by many as the most prestigious and significant awards in the entertainment industry worldwide. Given annually by the Academy of Motion Picture Arts and Sciences (AMPAS), the awards are...
Actresses (Catalan: Actrius) is a 1997 Catalan language Spanish drama film produced and directed by Ventura Pons and based on the award-winning stage play E.R. by Josep Maria Benet i Jornet. The film has no male actors, with all roles played by females. The film was produced in 1996. Synopsis In order to prepare herse...	Actresses' at the 1997 Toronto International Film Festival. It was also nominated for 'Best Catalan Film' and 'Film of the Year' in 1998. The film was screened in 2001 at the Grauman's Egyptian Theatre.	Actresses (Catalan: Actrius) is a 1997 Catalan language Spanish drama film produced and directed by Ventura Pons and based on the award-winning stage play E.R. by Josep Maria Benet i Jornet. The film has no male actors, with all roles played by females. The film was produced in 1996. Synopsis In order to prepare hersel...
Animalia is an illustrated children's book by Graeme Base. It was originally published in 1986, followed by a tenth anniversary edition in 1996, and a 25th anniversary edition in 2012. Over four million copies have been sold worldwide. A special numbered and signed anniversary edition was also published in 1996, with...	1. A 2. A 3. A 4. A 5. A 6. A 7. A 8. A 9. A 10. A 11. A 12. A 13. A 14. A 15. A 16. A 17. A 18. A 19. A 20. A 21. A 22. A 23. A 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. Alien 37. Ambulance 38. Antenna 39. Bonnet 40. Barbed wire 41. Brambles 42. Bulrushes 43. Baboon 44. Bassoon	Animalia is an illustrated children's book by Graeme Base. It was originally published in 1986, followed by a tenth anniversary edition in 1996, and a 25th anniversary edition in 2012. Over four million copies have been sold worldwide. A special numbered and signed anniversary edition was also published in 1996, with a...
International Atomic Time (TAI, from the French name ) is a high-precision atomic coordinate time standard based on the notional passage of proper time on Earth's geoid. It is a continuous scale of time, without leap seconds. It is the principal realisation of Terrestrial Time (with a fixed offset of epoch). It is also...	International Atomic Time (TAI) is a time scale based on the notional passage of proper time on Earth's geoid. It is the principal realisation of Terrestrial Time (with a fixed offset of epoch).	International Atomic Time (TAI, from the French name ) is a high-precision atomic coordinate time standard based on the notional passage of proper time on Earth's geoid. It is a continuous scale of time, without leap seconds. It is the principal realisation of Terrestrial Time (with a fixed offset of epoch). It is also...
Altruism is the principle and moral practice of concern for happiness of other human beings or other animals, resulting in a quality of life both material and spiritual. It is a traditional virtue in many cultures and a core aspect of various religious and secular worldviews. However, the object(s) of concern vary amon...	is an individual performing an action which is at a cost to themselves (e.g., pleasure and quality of life, time, probability of survival or reproduction), but benefits, either directly or indirectly, another individual, without the expectation of reciprocity or compensation for that action	Altruism is the principle and moral practice of concern for happiness of other human beings or other animals, resulting in a quality of life both material and spiritual. It is a traditional virtue in many cultures and a core aspect of various religious and secular worldviews. However, the object(s) of concern vary amon...
Alice O'Connor (born Alisa Zinovyevna Rosenbaum; , 1905 – March 6, 1982), better known by her pen name Ayn Rand (), was a Russian-born American writer and philosopher. She is known for her fiction and for developing a philosophical system she named Objectivism. Born and educated in Russia, she moved to the United State...	She was the eldest of three daughters of Zinovy Zakharovich Rosenbaum, a pharmacist, and Anna Borisovna (née Kaplan). She was born to a Russian-Jewish bourgeois family living in Saint Petersburg	Alice O'Connor (born Alisa Zinovyevna Rosenbaum; , 1905 – March 6, 1982), better known by her pen name Ayn Rand (), was a Russian-born American writer and philosopher. She is known for her fiction and for developing a philosophical system she named Objectivism. Born and educated in Russia, she moved to the United State...
Alain Connes (; born 1 April 1947) is a French mathematician, and a theoretical physicist, known for his contributions to the study of operator algebras and noncommutative geometry. He is a professor at the Collège de France, IHÉS, Ohio State University and Vanderbilt University. He was awarded the Fields Medal in 1982...	Geometry, Quantum Fields and Motives, Colloquium Publications, American Mathematical Society, 2007, Alain Connes, Andre Lichnerowicz, and Marcel Paul Schutzenberger, Triangle of Thought, translated by Jennifer Gage	Alain Connes (; born 1 April 1947) is a French mathematician, and a theoretical physicist, known for his contributions to the study of operator algebras and noncommutative geometry. He is a professor at the Collège de France, IHÉS, Ohio State University and Vanderbilt University. He was awarded the Fields Medal in 1982...
Allan Dwan (born Joseph Aloysius Dwan; April 3, 1885 – December 28, 1981) was a pioneering Canadian-born American motion picture director, producer, and screenwriter. Early life Born Joseph Aloysius Dwan in Toronto, Ontario, Canada, Dwan, was the younger son of commercial traveler of woolen clothing Joseph Michael Dwa...	Gloria Swanson in the 1922 movie "Lambs' Gambol" for the April 26, 1925 "League of Gentlemen" and the 1924 movie "The Lion King" for a group of young children, and was a joke.	Allan Dwan (born Joseph Aloysius Dwan; April 3, 1885 – December 28, 1981) was a pioneering Canadian-born American motion picture director, producer, and screenwriter. Early life Born Joseph Aloysius Dwan in Toronto, Ontario, Canada, Dwan, was the younger son of commercial traveler of woolen clothing Joseph Michael Dwan...
Algeria, officially the People's Democratic Republic of Algeria, is a country in the Maghreb region of North Africa. The country is the largest country by total area in Africa and in the Arab world, and is bordered to the northeast by Tunisia; to the east by Libya; to the southeast by Niger; to the southwest by Mali, M...	The capital and largest city is Algiers, located in the far north on the Mediterranean coast. The vast majority of Algeria's population is Arab-Berber, practicing Islam, and using the official languages of Arabic and Berber.	Algeria, officially the People's Democratic Republic of Algeria, is a country in the Maghreb region of North Africa. The country is the largest country by total area in Africa and in the Arab world, and is bordered to the northeast by Tunisia; to the east by Libya; to the southeast by Niger; to the southwest by Mali, M...
This is a list of characters in Ayn Rand's 1957 novel Atlas Shrugged. Major characters The following are major characters from the novel. Protagonists Dagny Taggart Dagny Taggart is the protagonist of the novel. She is vice-president in Charge of Operations for Taggart Transcontinental, under her brother, James Tagg...	The following is a list of characters in Ayn Rand's 1957 novel Atlas Shrugged: Protagonists, Dagny Taggart, Francisco d'Anconia, and John Galt.	This is a list of characters in Ayn Rand's 1957 novel Atlas Shrugged. Major characters The following are major characters from the novel. Protagonists Dagny Taggart Dagny Taggart is the protagonist of the novel. She is vice-president in Charge of Operations for Taggart Transcontinental, under her brother, James Taggart...
Anthropology is the scientific study of humanity, concerned with human behavior, human biology, cultures, societies, and linguistics, in both the present and past, including past human species. Social anthropology studies patterns of behaviour, while cultural anthropology studies cultural meaning, including norms and v...	Anthropological Society of New York, is a non-profit, non-partisan organization that promotes the study of human behavior, human biology, cultures, societies, and linguistics, in both the present and past, including past human species.	Anthropology is the scientific study of humanity, concerned with human behavior, human biology, cultures, societies, and linguistics, in both the present and past, including past human species. Social anthropology studies patterns of behaviour, while cultural anthropology studies cultural meaning, including norms and v...
Agricultural science (or agriscience for short) is a broad multidisciplinary field of biology that encompasses the parts of exact, natural, economic and social sciences that are used in the practice and understanding of agriculture. Professionals of the agricultural science are called agricultural scientists or agricul...	Agricultural biotechnology Agricultural chemistry Agricultural diversification Agricultural education Agricultural economics Agricultural geography Agricultural philosophy Agricultural marketing Agricultural soil science Agroecology Agrophysics Animal science Animal breeding Animal husbandry Animal nutrition Farm manag...	Agricultural science (or agriscience for short) is a broad multidisciplinary field of biology that encompasses the parts of exact, natural, economic and social sciences that are used in the practice and understanding of agriculture. Professionals of the agricultural science are called agricultural scientists or agricul...
Alchemy (from Arabic: al-kīmiyā; from Ancient Greek: khumeía) is an ancient branch of natural philosophy, a philosophical and protoscientific tradition that was historically practiced in China, India, the Muslim world, and Europe. In its Western form, alchemy is first attested in a number of pseudepigraphical texts wri...	Alchemists of the Islamic and European eras, who study the subject in terms of early chemistry and medicine, and its esoteric spiritual aspects, despite criticisms by scholars such as Eric J. Holmyard and Marie-Louise von Franz	Alchemy (from Arabic: al-k<unk>miy<unk>; from Ancient Greek: khume<unk>a) is an ancient branch of natural philosophy, a philosophical and protoscientific tradition that was historically practiced in China, India, the Muslim world, and Europe. In its Western form, alchemy is first attested in a number of pseudepigraphic...
Alien primarily refers to: Alien (law), a person in a country who is not a national of that country Enemy alien, the above in times of war Extraterrestrial life, life which does not originate from Earth Specifically, intelligent extraterrestrial beings; see List of alleged extraterrestrial beings Introduced specie...	Alien (film), a 1979 film by Ridley Scott Aliens, second film in the franchise from 1986 by James Cameron Alien 3, third film in a franchise from 1992 by David Fincher Alien Resurrection, fourth film in an franchise from 1997 by Jean-Pierre Jeunet Alien vs. Predator: Requiem	Alien primarily refers to: Alien (law), a person in a country who is not a national of that country Enemy alien, the above in times of war Extraterrestrial life, life which does not originate from Earth Specifically, intelligent extraterrestrial beings; see List of alleged extraterrestrial beings Introduced species, a ...
An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either observational (by analyzing the data) or theoretical astronomy. Examples of topics...	Describe the role of an astronomer in the study of astronomical objects. Describe how astronomers work. Specify the type of work they do. Identify the job duties of a astronomy professional.	An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either observational (by analyzing the data) or theoretical astronomy. Examples of topics...
ASCII ( ), abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices. Most modern character-encoding schemes are based on ASCII, although they support many a...	American National Standards Institute (ANSI) X3.2 subcommittee. The first edition of the standard was published in 1963, underwent a major revision during 1967, and experienced its most recent update during 1986. Originally based on the English alphabet	ASCII ( ), abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices. Most modern character-encoding schemes are based on ASCII, although they support many a...
Austin is the capital of Texas in the United States. Austin may also refer to: Geographical locations Australia Austin, Western Australia Canada Austin, Manitoba Austin, Ontario Austin, Quebec Austin Island, Nunavut France Saint-Austin, hamlet at la Neuville-Chant-d'Oisel, Normandy Hong Kong Austin statio...	Austin (disambiguation) may also refer to: Austin, Texas (U.S. state), Austin Township, Macon County, Illinois, Austin, Chicago, Cook County (Ill.), Illinois, Indiana, Kentucky, Minnesota, Missouri, Nevada, Ohio, Oregon, Pennsylvania, Texas, Austin County, Texas	Austin is the capital of Texas in the United States. Austin may also refer to: Geographical locations Australia Austin, Western Australia Canada Austin, Manitoba Austin, Ontario Austin, Quebec Austin Island, Nunavut France Saint-Austin, hamlet at la Neuville-Chant-d'Oisel, Normandy Hong Kong Austin station (MTR), Kowlo...
Animation is a method in which figures are manipulated to appear as moving images. In traditional animation, images are drawn or painted by hand on transparent celluloid sheets to be photographed and exhibited on film. Today, most animations are made with computer-generated imagery (CGI). Computer animation can be very...	Etymology The word "animation" stems from the Greek word , which means 'moving images' or 'motional images', which refers to a series of images that are manipulated to appear moving images.	Animation is a method in which figures are manipulated to appear as moving images. In traditional animation, images are drawn or painted by hand on transparent celluloid sheets to be photographed and exhibited on film. Today, most animations are made with computer-generated imagery (CGI). Computer animation can be very...
Apollo is one of the Olympian deities in classical Greek and Roman religion and Greek and Roman mythology. The national divinity of the Greeks, Apollo has been recognized as a god of archery, music and dance, truth and prophecy, healing and diseases, the Sun and light, poetry, and more. One of the most important and c...	Apollo is an oracular god—the prophetic deity of the Delphic Oracle. Seen as the most beautiful god and the ideal of the kouros (ephebe, or a beardless, athletic youth), Apollo is considered to be the most Greek of all the gods.	Apollo is one of the Olympian deities in classical Greek and Roman religion and Greek and Roman mythology. The national divinity of the Greeks, Apollo has been recognized as a god of archery, music and dance, truth and prophecy, healing and diseases, the Sun and light, poetry, and more. One of the most important and co...
Andre Kirk Agassi ( ; born April 29, 1970) is an American former world No. 1 tennis player. He is an eight-time major champion and a 1996 Olympic gold medalist, as well as a runner-up in seven other Grand Slam tournaments. Agassi was the first man to win four Australian Open singles titles in the Open Era (though late...	Agassi was the first man to win all four singles majors on three different surfaces (hard, clay and grass), and remains the most recent American to win the French Open and the Australian Open (in 1999) and enjoyed the most successful run of his career over the next four years	Andre Kirk Agassi ( ; born April 29, 1970) is an American former world No. 1 tennis player. He is an eight-time major champion and a 1996 Olympic gold medalist, as well as a runner-up in seven other Grand Slam tournaments. Agassi was the first man to win four Australian Open singles titles in the Open Era (though later...
The Austroasiatic languages , also known as Mon–Khmer , are a large language family in Mainland Southeast Asia and South Asia. These languages are scattered throughout parts of Thailand, India, Bangladesh, Nepal, and southern China. There are around 117 million speakers of Austroasiatic languages. Of these languages, ...	Indo-Tibetan languages, and has resulted in a variety of nouns and verbs in the family Austroasiatic languages, ranging from simple to complex, with a wide variety of presyllabic patterns.	The Austroasiatic languages , also known as Mon–Khmer , are a large language family in Mainland Southeast Asia and South Asia. These languages are scattered throughout parts of Thailand, India, Bangladesh, Nepal, and southern China. There are around 117 million speakers of Austroasiatic languages. Of these languages, o...
Afroasiatic (Afro-Asiatic), also known as Afrasian or Hamito-Semitic, Semito-Hamitic, or Erythraean, is a large language family of about 300 languages that are spoken predominantly in Western Asia, North Africa, the Horn of Africa and parts of the Sahel. With the exception of Semitic, all branches of the Afroаsiatic fa...	Afroasiatic (Afro-Asiatic), also known as Afrasian or Hamito-Semitic, Semito-Hamitic, or Erythraean, is a large language family	Afroasiatic (Afro-Asiatic), also known as Afrasian or Hamito-Semitic, Semito-Hamitic, or Erythraean, is a large language family of about 300 languages that are spoken predominantly in Western Asia, North Africa, the Horn of Africa and parts of the Sahel. With the exception of Semitic, all branches of the Afroаsiatic fa...
Andorra, officially the Principality of Andorra, is a sovereign landlocked microstate on the Iberian Peninsula, in the eastern Pyrenees, bordered by France to the north and Spain to the south. Believed to have been created by Charlemagne, Andorra was ruled by the count of Urgell until 988, when it was transferred to th...	Andorra is a landlocked microstate on the Iberian Peninsula, in the eastern Pyrenees, bordered by France to the north and Spain to the south. Believed to have been created by Charlemagne,	Andorra, officially the Principality of Andorra, is a sovereign landlocked microstate on the Iberian Peninsula, in the eastern Pyrenees, bordered by France to the north and Spain to the south. Believed to have been created by Charlemagne, Andorra was ruled by the count of Urgell until 988, when it was transferred to th...
In mathematics and statistics, the arithmetic mean ( ) or arithmetic average, or simply just the mean or the average (when the context is clear), is the sum of a collection of numbers divided by the count of numbers in the collection. The collection is often a set of results of an experiment or an observational study, ...	Sum of a collection of numbers divided by the count of numbers in the collection. The term "arithmetic mean" is preferred in some contexts in mathematics and statistics, because it helps distinguish it from other means, such as the geometric mean and the harmonic mean.	In mathematics and statistics, the arithmetic mean ( ) or arithmetic average, or simply just the mean or the average (when the context is clear), is the sum of a collection of numbers divided by the count of numbers in the collection. The collection is often a set of results of an experiment or an observational study, ...
The American Football Conference (AFC) is one of the two conferences of the National Football League (NFL), the highest professional level of American football in the United States. This conference currently contains 16 teams organized into 4 divisions, as does its counterpart, the National Football Conference (NFC). B...	The 2021 regular season schedule is based on a pre-determined formula: each team plays the other teams in their respective division twice (home and away) during the regular season, in addition to eleven other games assigned to their schedule by the NFL: three games are assigned on the basis of a particular team's final...	The American Football Conference (AFC) is one of the two conferences of the National Football League (NFL), the highest professional level of American football in the United States. This conference currently contains 16 teams organized into 4 divisions, as does its counterpart, the National Football Conference (NFC). B...
Animal Farm is a satirical allegorical novella by George Orwell, first published in England on 17 August 1945. The book tells the story of a group of farm animals who rebel against their human farmer, hoping to create a society where the animals can be equal, free, and happy. Ultimately, the rebellion is betrayed, and ...	satirical novella by Orwell in its "The New York Times" list of the year's best-selling novels, based on a review of the book in "Time" magazine's "Times" section.	Animal Farm is a satirical allegorical novella by George Orwell, first published in England on 17 August 1945. The book tells the story of a group of farm animals who rebel against their human farmer, hoping to create a society where the animals can be equal, free, and happy. Ultimately, the rebellion is betrayed, and ...
Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living...	Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems.	Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living...
Alaska (; ; ; ; Yup'ik: Alaskaq; ) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the territory of Yukon to the east and shares a maritime border with the Russian Federation's Chukotka Auto...	Alaska's smallest, and its per capita income is among the lowest in the United States, at $29,020.8 million, compared to the national average of $39,040. The state has one of the smallest state economies in the country, with an average annual income per capita of $29 per capita.	Alaska (; ; ; ; Yup'ik: Alaskaq; ) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the territory of Yukon to the east and shares a maritime border with the Russian Federation's Chukotka Auto...
Agriculture is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. After gathering...	scope The word agriculture is a late Middle English adaptation of Latin , from 'field' and 'cultivation' or 'growing'. While agriculture usually refers to human activities, certain species of ant, termite and beetle have been cultivating crops for up to 60 million years	Agriculture is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. After gathering...
Aldous Leonard Huxley (26 July 1894 – 22 November 1963) was an English writer and philosopher. He wrote nearly 50 books—both novels and non-fiction works—as well as wide-ranging essays, narratives, and poems. Born into the prominent Huxley family, he graduated from Balliol College, Oxford, with an undergraduate degree...	Aldous was born in Godalming, Surrey, England, in 1894. He was the third son of the writer and schoolmaster Leonard Huxley, who edited The Cornhill Magazine, and his first wife Julia Arnold, who founded Prior's Field School.	Aldous Leonard Huxley (26 July 1894 – 22 November 1963) was an English writer and philosopher. He wrote nearly 50 books—both novels and non-fiction works—as well as wide-ranging essays, narratives, and poems. Born into the prominent Huxley family, he graduated from Balliol College, Oxford, with an undergraduate degree ...