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51Sibley-Monroe checklist 11 — The Sibley Monroe checklist was a landmark document in the study of birds. It drew on extensive DNA DNA hybridisation studies to reassess the relationships between modern birds. Passeriformes (continued)Thamnophilidae* Cymbilaimus lineatus… …
52Hydrothermal vent — Marine habitats White smokers emitting liquid carbon dioxide at the Champagne vent, Northwest Eifuku volcano, Marianas Trench Marine National Monument Littoral zone …
53Alexander Frumkin — Alexander Naumovich Frumkin (Александр Наумович Фрумкин) (October 24, 1895 ndash; May 27, 1976), Russian/Soviet electrochemist, member of the Russian Academy of Sciences since 1932, founder of the Russian Journal of Electrochemistry… …
54Luminous efficacy — is a measure of how well a light source produces visible light. It is the ratio of luminous flux to power. Depending on context, the power can be either the radiant flux of the source s output, or it can be the total electric power consumed by… …
55History of Newcastle upon Tyne — The history of Newcastle upon Tyne dates back almost 2,000 years, during which it has been controlled by the Romans, the Saxons and the Danes amongst others. Originally known by its Roman name Pons Aelius , the name Newcastle has been used since… …
56List of birds of Brazil — Brazil has one of the richest bird diversities in the world, with more than 1700 species of birds, about 57% of the bird species recorded for all of South America. These numbers are still increasing, almost every year, due to new occurrences or… …
57Speech perception — is the process by which the sounds of language are heard, interpreted and understood. The study of speech perception is closely linked to the fields of phonetics and phonology in linguistics and cognitive psychology and perception in psychology.… …
58Speedwriting — Infobox Writing system name = Speedwriting type = Alphabet typedesc = Shorthand creator=Emma Dearborn time = 1924–present languages = English fam1 = Latin Alphabet sample = Spedwrit.pngSpeedwriting is a shorthand writing system developed in 1924… …
59List of birds of Ecuador — This is a list of the bird species recorded in Ecuador. The avifauna of Ecuador includes a total of 1663 species, of which 16 are endemic, 2 have been introduced by humans, and 19 are rare or accidental. 77 species are globally threatened.This… …
60List of birds of Peru — This is a list of the bird species recorded in Peru. The avifauna of Peru includes a total of 1879 species, of which 139 are endemic, 3 have been introduced by humans, and 72 are rare or accidental. 91 species are globally threatened.This list s… …
