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Primate city
A city that dominated a country’s urban scene is usually defined as larger than its second and third largest cities combined.
Category: Glossary
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Prime Meridian
The imaginary line at zero meridians is used to measure longitude east to west and divide the earth’s east and west halves.
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Prime minister
The head of a government. The majority party’s leader in parliament.
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Privatization
The selling of government-owned businesses to private citizens.
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Producers
(Self-feeders) In a food chain, organisms produce their own food (mostly green plants).
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Projection
The distortion is caused by the transfer of three-dimensional space on Earth’s surface to the two dimensions of a flat map.
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Pull factor
A factor that draws or attracts people to another location.
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Push and pull forces of migration
So-called push factors may cause emigration when hunger or lack of land “pushes” peasants out of rural areas into cities, or by pull factors, as when an educated villager responds to a job opportunity in the cities.
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Push factor
A factor that causes people to leave their homelands and migrate to another region.
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Pyongyang
The largest city in north korea, with more than 2.5 million people.
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Pyramid of biomass
A diagrammatic representation of decreasing biomass in a food chain.
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Pyramid of energy flow
A diagrammatic representation of the loss of high quality, concentrated energy passes through the food chain.
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Qanat
A tunnel is used to carry irrigation and drinking water from an underground source by gravity flow.
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Qin Ling Mountains
Mountains in southeastern and east-central China. They divide the northern part of China from the southern part.
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Quechua
The language of the Inca empire, now spoken in the Andes highlands.
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Rabies
Rabies is a viral disease of mammals usually transmitted through an infected animal’s bite, most commonly dogs.
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Racism
Racism: the belief that one’s own racial group is superior to others.
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Rai
A kind of popular Algerian music developed in the 1920s by poor urban children is fast-paced with danceable rhythms. It was sometimes used as a form of rebellion to expose political unhappiness.