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naturalism
naturalism in art, a tendency toward strict adherence to the physical appearance of nature and rejection of ideal forms. Artists as diverse as Velázquez , J. F. Millet , and Monet , have followed naturalistic principles.
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naturalism
naturalism in philosophy, a position that attempts to explain all phenomena and account for all values by means of strictly natural (as opposed to supernatural) categories. The particular meaning of naturalism varies with what is opposed to it. It is usually considered the opposite of idealism , i...
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naturalism
naturalism in literature, an approach that proceeds from an analysis of reality in terms of natural forces, e.g., heredity, environment, physical drives. The chief literary theorist on naturalism was Émile Zola , who said in his essay Le Roman expérimental (1880) that the novelist ...
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natural rights
natural rights political theory that maintains that an individual enters into society with certain basic rights and that no government can deny these rights. The modern idea of natural rights grew out of the ancient and medieval doctrines of natural law , i.e., the belief that people, as creatures...
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natural childbirth
natural childbirth (nach-ĕr-ăl) n. labour and delivery that relies largely on the efforts of the mother alone, with the minimum of medical intervention....
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natural law
natural law theory that some laws are basic and fundamental to human nature and are discoverable by human reason without reference to specific legislative enactments or judicial decisions. Natural law is opposed to positive law, which is human-made, conditioned by history, and subject to continuous...
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natural gas
natural gas natural mixture of gaseous hydrocarbons found issuing from the ground or obtained from specially driven wells. The composition of natural gas varies in different localities. Its chief component, methane , usually makes up from 80% to 95%, and the balance is composed of varying amount...
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natural selection
natural selection (‘survival of the fittest’) A complex process in which the total environment determines which members of a species survive to reproduce and so pass on their genes to the next generation. This need not necessarily involve a struggle between organisms....
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International Union for the Conservation of Nature and Natural Resources
International Union for the Conservation of Nature and Natural Resources (IUCN) or World Conservation Union, international organization founded in 1948 to encourage the preservation of wildlife, natural environments, and living resources. Its members include private individuals, nongovernmental...
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conservation of natural resources
conservation of natural resources the wise use of the earth's resources by humanity. The term conservation came into use in the late 19th cent. and referred to the management, mainly for economic reasons, of such valuable natural resources as timber, fish, game, topsoil, pastureland, and minerals...
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