| Alaska Alaska
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| Atlantic Ocean The Atlantic Ocean is the second-largest of the world's oceanic divisions; with a total area of about 106.4 million square kilometres (41.1 million square miles). It covers approximately one-fifth of the Earth's surface. The first part of its name refers to the Atlas of Greek mythology, making the Atlantic the "Sea of Atlas". Atlantic_Ocean
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| Aromatic hydrocarbon An aromatic hydrocarbon (abbreviated as AH) or arene is a hydrocarbon, of which the molecular structure incorporates one or more planar sets of six carbon atoms that are connected by delocalised electrons numbering the same as if they consisted of alternating single and double covalent bonds. Aromatic_hydrocarbon
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| Aleutian Islands The Aleutian Islands (possibly from Chukchi aliat, "island") are a chain of more than 300 small volcanic islands forming a volcanic arc in the Northern Pacific Ocean, occupying an area of 6,821 sq mi (17,666Alaska Peninsula toward the Kamchatka Peninsula. Crossing longitude 180°, they are the westernmost part of the United States (and by one definition the easternmost; see Extreme points of the United States). Aleutian_Islands
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| Aquaculture Aquaculture is the farming of freshwater and saltwater organisms including molluscs, crustaceans and aquatic plants. Unlike fishing, aquaculture, also known as aquafarming, implies the cultivation of aquatic populations under controlled conditions. Mariculture refers to aquaculture practiced in marine environments. Aquaculture
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| Ambergris Ambergris (Ambra grisea, Ambre gris, ambergrease, or grey amber) is a solid, waxy, flammable substance of a dull gray or blackish color produced in the digestive system of sperm whales. Ambergris has a peculiar sweet, earthy odor. The principal historical use of ambergris was as a fixative in perfumery, though it has now been largely displaced by synthetics. Ambergris
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| Acre The acre is a unit of area in a number of different systems, including the imperial and U.S. customary systems. The most commonly used acres today are the international acre and, in the United States, the survey acre.One international acre is equal to 4,046.8564224m2. One U.S. survey acre is equal to 2 = 4,046.87260982. Acre
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| Arkansas Arkansas
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| Austin, Texas Austin is the capital of the U.S. state of Texas and the county seat of Travis County. Located in Central Texas and the eastern edge of the American, it is the fourth-largest city in Texas and the 16th-largest in the United. It was the third-fastest-growing large city in the nation from 2000 to 2006. According to the 2007 U.S. Census estimate, Austin had a population of 743,074. Austin,_Texas
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| Analog computer An analog computer (spelled analogue in British English) is a form of computer that uses continuous physical phenomena such as electrical, mechanical, or hydraulic quantities to model the problem being solved. Analog_computer
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| Autumn Autumn (also known as Fall in North American English) is one of the four temperate seasons. Autumn marks the transition from summer into winter, usually in late March (southern hemisphere) or late September (northern hemisphere) when the arrival of night becomes noticeably earlier. Autumn
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| Acid rain Acid rain is rain or any other form of precipitation that is unusually acidic. It has harmful effects on plants, aquatic animals, and infrastructure. Acid rain is mostly caused by human emissions of sulfur and nitrogen compounds which react in the atmosphere to produce acids. In recent years, many governments have introduced laws to reduce these emissions. Acid_rain
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| The Bahamas The_Bahamas
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| Buffalo, New York Buffalo (), is the second largest city in the state of New York. Located in Western New York on the eastern shores of Lake Erie and at the head of the Niagara River, Buffalo is the principal city of the Buffalo-Niagara Falls metropolitan area and the seat of Erie County. Buffalo,_New_York
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| Benjamin Franklin Benjamin Franklin ( April 17, 1790) was one of the Founding Fathers of the United States of America. A noted polymath, Franklin was a leading author and printer, satirist, political theorist, politician, scientist, inventor, civic activist, statesman, and diplomat. Benjamin_Franklin
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| Boston Boston
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| Biotechnology Biotechnology is technology based on biology, especially when used in agriculture, food science, and medicine. United Nations Convention on Biological Diversity defines biotechnology asBiotechnology is often used to refer to genetic engineering technology of the 21st century, however the term encompasses a wider range and history of procedures for modifying biological organisms according to the needs of humanity, going back to the initial modifications of native plants into improved food crops through artificial selection and hybridization. Biotechnology
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| Blue Whale The Blue Whale (Balaenoptera musculus) is a marine mammal belonging to the suborder of baleen whales (called Mysticeti). Blue_Whale
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| Coast The coast is defined as where the land meets the sea. A precise line that can be called a coastline cannot be determined due to the process of tides. The term "coastal zone" can be used instead, which is a spatial zone where interaction of the sea and land processes occurs. Both the terms coast and coastal are often used to describe a geographic location or region; for example, New Zealand's West Coast, or the East and Coast
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| Conversion of units Conversion of units refers to conversion factors between different units of measurement for the same quantity. Conversion_of_units
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| Colorado Colorado
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| Columbia River The Columbia River (known as Wimahl or Big River to the Chinook-speaking natives who lived on its lowermost reaches) is the largest river in the Pacific Northwest region of North America. It is named after the Columbia Rediviva, the first ship from the western world known to have traveled up the river. It stretches from British Columbia through Washington state, forming much of the border between Washington and Oregon before emptying into the Pacific Ocean. The river is long, and its drainage basin is . Columbia_River
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| Cameroon Cameroon
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| Geography of Cameroon At , Cameroon is the world's 53rd-largest country. It is comparable in size to Papua New Guinea, and somewhat larger than the U.S. state of California. Cameroon's landmass is , with of water.The country is located in Central and West Africa, bordering the Bight of Biafra, between Equatorial Guinea and Nigeria. Geography_of_Cameroon
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| Geography of Colombia Geography_of_Colombia
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| Carbon dioxide Carbon dioxide (chemical formula:chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state.Carbon dioxide is used by plants during photosynthesis to make sugars which may either be consumed again in respiration or used as the raw material to produce polysaccharides such as starch and cellulose, proteins and the wide variety of other organic compounds required for plant growth and development. Carbon_dioxide
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| Columbus, Ohio Columbus is the capital and the largest city in the U.S. state of Ohio. It is the county seat of Franklin County, although parts of the city also extend into Delaware and Fairfield counties. Named for explorer Christopher Columbus, the city was founded in 1812 at the confluence of the Scioto and Olentangy rivers, and assumed the functions of state capital in 1816.The population was 711,470 at the 2000 census. Columbus,_Ohio
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| Cleveland, Ohio Cleveland,_Ohio
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| Carbon sink carbon sink is a natural or manmade reservoir that accumulates and stores some carbon-containing chemical compound for an indefinite period.The main natural sinks are Absorption of carbon dioxide by the oceans Photosynthesis by plants and algae The main manmade sinks are Landfills Carbon capture and storage proposals Carbon_sink
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| Climate Climate encompasses the temperatures, humidity, atmospheric pressure, winds, rainfall, atmospheric particle count and numerous other meteorological elements in a given region over long periods of time, as opposed to the term weather, which refers to current activity of these same elements. Climate
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| Connecticut Connecticut
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| Cat Cat
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| Chicago Chicago ( or Chicago
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| London Borough of Croydon The London Borough of Croydon () is a London borough in South London, England and is part of Outer London. It covers an area of and is the largest London borough by population. It is the southernmost borough of London. The borough is now one of London's leading business, financial and cultural centres, and its influence in entertainment and the arts contribute to its status as a major metropolitan centre. London_Borough_of_Croydon
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| Caribbean Sea Caribbean Sea is a sea of the Atlantic Ocean situated in the tropics of the Western hemisphere, bounded to the south and west by the American landmass, with the North Atlantic Ocean proper to the northeast and the Gulf of Mexico to the northwest. More specifically, it washes upon (clockwise from the south) the South American countries of Venezuela and Colombia on the south; the Central American countries of Panama on the southwest, and Costa Rica, Nicaragua, Honduras, Guatemala, Belize, and Mexico on the west; the Greater Antilles (Cuba, Jamaica, Hispaniola, and Puerto Rico) on the north, and the Lesser Antilles on the east. Caribbean_Sea
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| Decibel The decibel (dB) is a logarithmic unit of measurement that expresses the magnitude of a physical quantity (usually power or intensity) relative to a specified or implied reference level. Since it expresses a ratio of two quantities with the same unit, it is a dimensionless unit. Decibel
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| Denver Denver
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| Davenport, Iowa Davenport is a city in Scott County, Iowa, United States, along the Mississippi River. As of the 2000 census, the city had a population of 98,359 and an area of . According to a 2007 estimate, the city had grown slightly to 98,975. One of the Quad Cities, along with neighboring Bettendorf and the Illinois cities of Moline, East Moline and Rock Island, Davenport is the county seat of Scott County. Davenport,_Iowa
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| Detroit Detroit (; from "strait", ) is the largest city in the U.S. state of Michigan and the seat of Wayne County. Detroit is a major port city on the Detroit River, in the Midwest region of the United States. Located north of Windsor, Ontario, Detroit is the only major U.S. Detroit
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| Dolphin Dolphins are marine mammals that are closely related to whales and porpoises. There are almost forty species of dolphin in seventeen genera. They vary in size from and (Maui's Dolphin), up to and (the Orca or Killer Whale). They are found worldwide, mostly in the shallower seas of the continental shelves, and are carnivores, mostly eating fish and squid. Dolphin
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| Earth Earth
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| English words with uncommon properties For the purposes of this article, any word which has appeared in a recognised general English dictionary published in the 20th century or later is considered a candidate. For interest, some archaic words, non-standard words and proper names are also included.The treatment of words of foreign origin can be problematic. English_words_with_uncommon_properties
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| Eugene, Oregon Eugene () is the second largest city in the U.S. State of Oregon and the county seat of Lane County. It is located at the south end of the Willamette Valley, at the confluence of the McKenzie and Willamette rivers, about 50 miles (86Oregon Coast. According to the official 2008 population figures Eugene is the second largest city in the state of Oregon, with an estimated population of 154,620, and center of the third largest metropolitan population. Eugene,_Oregon
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| Ecosystem ecosystem is a natural unit consisting of all plants, animals and micro-organisms (biotic factors) in an area functioning together with all of the physical (abiotic) factors of the environment. An ecosystem is a unit of interdependent organisms which share the same habitat. Ecosystems usually form a number of food webs which show the interdependence of the organisms within the ecosystem. Ecosystem
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| Eclipse eclipse is an astronomical event that occurs when one celestial object moves into the shadow of another. The term is derived from the ancient Greek noun (''''' Solar System, it forms a type of syzygy—gravitational system along a straight line. The term eclipse is most often used to describe either a solar eclipse, when the Moon's shadow crosses the Earth's surface, or a lunar eclipse, when the Moon moves into the shadow of Earth. However, it can also refer to such events beyond the Ea Eclipse
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| Exxon Valdez oil spill The Exxon Valdez oil spill occurred in the Prince William Sound, Alaska, on March 24, 1989. It is considered one of the most devastating human-caused environmental disasters ever to occur at sea. As significant as the Exxon Valdez spill was, it ranks well down on the list of the world's largest oil spills in terms of volume released. Exxon_Valdez_oil_spill
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| El Niño-Southern Oscillation El Niño-Southern Oscillation (ENSO; commonly referred to as simply El Niño) is a global coupled ocean-atmosphere phenomenon. The Pacific ocean signatures, El Niño and La Niña are important temperature fluctuations in surface waters of the tropical Eastern Pacific Ocean. El_Niño-Southern_Oscillation
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| Fort Wayne, Indiana Fort Wayne is a city in northeastern Indiana, United States and the county seat of Allen County. As of 2008, the city had an estimated population of 251,247, ranking it the 72nd largest city in the United States, as well as Indiana's second largest city after Indianapolis. In 2006, the combined population of the Fort Wayne Metropolitan Statistical Area was 570,779, ranking it the third largest metropolitan area in the state. Fort_Wayne,_Indiana
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| Furlong A furlong is a measure of distance in imperial units and U.S. customary units. It is equal to one-eighth of a mile, 220yards, 660 feet, 201.168 meters, or 10 chains.Five furlongs are approximately 1 kilometer (1.00584definition of the meter was one-quarter of one ten-millionth of the circumference of the Earth (along the great circle coincident with the meridian of longitude passing through Paris), the circumference of the Earth is about 40,000 km or about 200,000 furlongs. Furlong
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| Fur seal Fur seals are any of nine species of pinnipeds in the Otariidae family. One species, the northern fur seal (Callorhinus ursinus) inhabits the North Pacific, while seven species in the Arctocephalus genus are found primarily in the Southern hemisphere. They are much more closely related to sea lions than true seals, and share with them external ears (pinnae), relatively long and muscular foreflippers, and the ability to walk on all fours. Fur_seal
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