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Algeria
a republic in northwestern Africa on the Mediterranean Sea with a population that is predominantly Sunni Muslim; colonized by France in the 19th century but gained autonomy in the early 1960s
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Amsterdam
an industrial center and the nominal capital of the Netherlands; center of the diamond-cutting industry; seat of an important stock exchange; known for its canals and art museum
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Australia
the smallest continent; between the South Pacific and the Indian Ocean
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axis
a straight line through a body or figure that satisfies certain conditions
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barrier island
a long narrow sandy island (wider than a reef) running parallel to the shore
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Belgium
a monarchy in northwestern Europe; headquarters for the European Union and for the North Atlantic Treaty Organization
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biome
a major biotic community characterized by the dominant forms of plant life and the prevailing climate
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biosphere
the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist
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Boston
state capital and largest city of Massachusetts; a major center for banking and financial services
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Brenner Pass
an Alpine mountain pass connecting Innsbruck in Austria with Bolzano in Italy that has long been a route for trade and for invasions
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Canberra
the capital of Australia; located in southeastern Australia
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Capitol Hill
a hill in Washington, D.C., where the Capitol Building sits and Congress meets
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Chile
a republic in southern South America on the western slopes of the Andes on the south Pacific coast
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China
a communist nation that covers a vast territory in eastern Asia; the most populous country in the world
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Congo
a major African river (one of the world's longest); flows through Congo into the South Atlantic
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conservationist
someone who works to protect the environment from destruction or pollution
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Cumberland Gap
a pass through the Cumberland Mountains between Virginia and Kentucky that early settlers used in order to move west
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decentralization
the spread of power away from the center to local branches or governments
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Delaware River
a river that rises in the Catskills in southeastern New York and flows southward along the border of Pennsylvania with New York and New Jersey to northern Delaware where it empties into Delaware Bay
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developing country
a country that is poor and whose citizens are mostly agricultural workers but that wants to become more advanced socially and economically
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downstream
in the direction of a stream's current
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drainage basin
the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet
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ecosystem
a system formed by the interaction of a community of organisms with their physical environment
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equilibrium
a stable situation in which forces cancel one another
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Ethiopia
Ethiopia is a republic in northeastern Africa on the Red Sea; formerly called Abyssinia
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Everglades
a large subtropical swamp in southern Florida that is noted for its wildlife
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fauna
all the animal life in a particular region or period
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floodplain
a low plain adjacent to a river that is formed chiefly of river sediment and is subject to flooding
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flora
all the plant life in a particular region or period
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global warming
an increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes)
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hemisphere
half of a sphere
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Hong Kong
formerly a Crown Colony on the coast of southern China in Guangdong province; leased by China to Britain in 1842 and returned in 1997; one of the world's leading commercial centers
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housing development
a residential area of similar dwellings built by property developers and usually under a single management
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human process
a process in which human beings are involved
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hurricane
a severe tropical cyclone usually with heavy rains and winds moving a 73-136 knots (12 on the Beaufort scale)
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Indonesia
a republic in southeastern Asia on an archipelago including more than 13,000 islands; achieved independence from the Netherlands in 1945; the principal oil producer in the Far East and Pacific regions
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infrastructure
the basic structure or features of a system or organization
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interdependence
a reciprocal relation between interdependent entities (objects or individuals or groups)
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Inuit
a member of a people inhabiting the Arctic (northern Canada or Greenland or Alaska or eastern Siberia); the Algonquians called them Eskimo (`eaters of raw flesh') but they call themselves the Inuit (`the people')
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isthmus
a relatively narrow strip of land (with water on both sides) connecting two larger land areas
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Italy
a republic in southern Europe on the Italian Peninsula; was the core of the Roman Republic and the Roman Empire between the 4th century BC and the 5th century AD
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Khyber Pass
a mountain pass of great strategic and commercial value in the Hindu Kush on the border between northern Pakistan and western Afghanistan; a route by which invaders entered India
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leeward
on the side away from the wind
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levee
a pier that provides a landing place on a river
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lithosphere
the solid part of the earth consisting of the crust and outer mantle
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meridian
an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator
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Mesopotamia
the land between the Tigris and Euphrates; site of several ancient civilizations; part of what is now known as Iraq
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mobility
the quality of moving freely
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natural resource
resources (actual and potential) supplied by nature
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Netherlands
a constitutional monarchy in western Europe on the North Sea; half the country lies below sea level
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New Delhi
the capital of India is a division of the old city of Delhi
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nitrogen cycle
the circulation of nitrogen; nitrates from the soil are absorbed by plants which are eaten by animals that die and decay returning the nitrogen back to the soil
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overpopulation
too much population
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Pakistan
a Muslim republic that occupies the heartland of ancient south Asian civilization in the Indus River valley; formerly part of India; achieved independence from the United Kingdom in 1947
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Philippines
a republic on the Philippine Islands; achieved independence from the United States in 1946
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physical geography
the study of physical features of the earth's surface
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political unit
a unit with political responsibilities
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prevailing wind
the predominant wind direction
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public housing
a housing development that is publicly funded and administered for low-income families
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public transit
a public transportation system for moving passengers
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reforestation
the restoration (replanting) of a forest that had been reduced by fire or cutting
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renewable resource
any natural resource (as wood or solar energy) that can be replenished naturally with the passage of time
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Riviera
a coastal area between La Spezia in Italy and Cannes in France
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runoff
a final election to resolve an earlier election that did not produce a winner
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Saudi Arabia
an absolute monarchy occupying most of the Arabian Peninsula in southwest Asia; vast oil reserves dominate the economy
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savanna
a flat grassland in tropical or subtropical regions
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school district
a district whose public schools are administered together
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Siberia
a vast Asian region of Russia; famous for long cold winters
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Singapore
an island to the south of the Malay Peninsula
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soil erosion
the washing away of soil by the flow of water
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solar power
energy from the sun that is converted into thermal or electrical energy
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South Africa
a republic at the southernmost part of Africa; achieved independence from the United Kingdom in 1910; first European settlers were Dutch (known as Boers)
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Soviet Union
a former communist country in eastern Europe and northern Asia; established in 1922; included Russia and 14 other soviet socialist republics (Ukraine and Byelorussia and others); officially dissolved 31 December 1991
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spatial
pertaining to or involving or having the nature of space
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spatial arrangement
the property possessed by an array of things that have space between them
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standard of living
a level of material comfort in terms of goods and services available to someone or some group
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strait
a narrow channel of the sea joining two larger bodies of water
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Sunbelt
states in the south and southwest that have a warm climate and tend to be politically conservative
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tariff
a government tax on imports or exports
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The Hague
the site of the royal residence and the de facto capital in the western part of the Netherlands; seat of the International Court of Justice
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topography
the configuration of a surface and the relations among its man-made and natural features
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Trenton
capital of the state of New Jersey; located in western New Jersey on the Delaware river
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Tropic of Cancer
a line of latitude about 23 degrees to the north of the equator
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Tropic of Capricorn
a line of latitude about 23 degrees to the south of the equator
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tropical rain forest
a rain forest in a tropical area
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tsunami
a cataclysm resulting from a destructive sea wave caused by an earthquake or volcanic eruption
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tundra
a vast treeless plain in the Arctic regions where the subsoil is permanently frozen
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Vietnamese
a native or inhabitant of Vietnam
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Washington
1st President of the United States; commander-in-chief of the Continental Army during the American Revolution (1732-1799)
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water supply
a facility that provides a source of water
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watershed
a ridge of land that separates two adjacent river systems
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World Court
a court established to settle disputes between members of the United Nations
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Yucatan Peninsula
a peninsula in Central America extending into the Gulf of Mexico between the Bay of Campeche and the Caribbean Sea