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Peninsula
Peninsula: a strip of land surrounded on three sides by water.
Category: Glossary
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People overpopulation
The concept that many persons, each using a small number of natural resources to sustain life, add up to too many people for the environment to support.
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Per Capita Gross Domestic Product Purchasing Power Parity
GDP PPP: In this figure, annual per capita gross domestic product (GDP) – the total output of goods and services a country produces for home use in a year – is divided by the country’s population.
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Per capita income
The average amount of money earned by each person in a political unit.
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Perennial irrigation
The year-round irrigated cultivation of crops, as in the Nile Valley, following the construction of barrages and dams.
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Phosphate
Phosphate: a chemical compound used in fertilizers and detergents.
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Photosynthesis
The process by which green plants use the sun’s energy to combine carbon dioxide with water to give off oxygen and produce their own food supply.
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Physical geography
The subdiscipline of geography is most concerned with the climate, landforms, soils, and physiography of the earth’s surface.
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Piedmont
A belt of the country at an average elevation along the base of a mountain range.
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Pilgrim
Pilgrim: a person who goes on a journey, or pilgrimage, to a sacred place.
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Pillars of Islam
The five fundamental tenets of the faith of Islam.
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Pivotal countries
Those countries whose collapse would cause international refugee migration, war, pollution, disease epidemics, or other international security problems.
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Place identity
In the geographic analysis of a given locale, the nature of place identity becomes a means of understanding people’s response to that particular place.
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Plague
Plague is a bacterial disease transmitted by fleas normally associated with rats, but person-to-person airborne transmission also possible.
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Plain
A flat to the moderately sloping area, generally of slight elevation.
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Planet Earth
The Earth is one of nine planets that make up the Solar System.
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Plantation
A large farm using hired workers to grow and harvest one main crop, such as coffee, sugarcane, rubber, or cotton.