Category: Glossary
Peninsula
Peninsula: a strip of land surrounded on three sides by water.
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.
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.
Per capita income
The average amount of money earned by each person in a political unit.
Perennial irrigation
The year-round irrigated cultivation of crops, as in the Nile Valley, following the construction of barrages and dams.
Phosphate
Phosphate: a chemical compound used in fertilizers and detergents.
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.
Physical geography
The subdiscipline of geography is most concerned with the climate, landforms, soils, and physiography of the earth’s surface.
Piedmont
A belt of the country at an average elevation along the base of a mountain range.
Pilgrim
Pilgrim: a person who goes on a journey, or pilgrimage, to a sacred place.
Pillars of Islam
The five fundamental tenets of the faith of Islam.
Pivotal countries
Those countries whose collapse would cause international refugee migration, war, pollution, disease epidemics, or other international security problems.
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.
Plague
Plague is a bacterial disease transmitted by fleas normally associated with rats, but person-to-person airborne transmission also possible.
Plain
A flat to the moderately sloping area, generally of slight elevation.
Planet Earth
The Earth is one of nine planets that make up the Solar System.