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Rather than define the hierarchy by population, an alternative way to construct the hierarchy is based on the services that are available within each settlement. Settlements are described as "level 1", "level 2", etc. rather than using terms such as village or town. [13]
Urban sociology is the sociological study of cities and urban life. One of the field’s oldest sub-disciplines, urban sociology studies and examines the social, historical, political, cultural, economic, and environmental forces that have shaped urban environments.
The urban hierarchy ranks each city based on the size of population residing within the nationally defined statistical urban area. Because urban population depends on how governments define their metropolitan areas, urban hierarchies are conventionally ranked at the national level; however, the ranking can be extended globally to include all cities.
El Alto in Bolivia is the highest-altitude city in the world. This list of the highest cities in the world includes only cities with a population greater than 100,000 inhabitants and an average height above sea level over 2,000 metres (6,600 ft).
Somaliland [Note 2] Hargeisa: 1,334 4,377 South Ossetia [Note 2] Tskhinvali: 860 2,820 Kosovo [Note 2] Pristina: 603 1,977 Sahrawi Arab Democratic Republic [Note 2] Tifariti and Laayoune: 490 (and 68) 1,610 (and 223) Northern Cyprus [Note 2] North Nicosia: 130 428 Transnistria [Note 2] Tiraspol: 26 85 Greenland: Nuuk: 5 16 Abkhazia [Note 2 ...
The human body can perform best at sea level, [7] where the atmospheric pressure is 101,325 Pa or 1013.25 millibars (or 1 atm, by definition). The concentration of oxygen (O 2) in sea-level air is 20.9%, so the partial pressure of O 2 (pO 2) is 21.136 kilopascals (158.53 mmHg).
New York City, one of the largest urban areas in the world. Urban geography is the subdiscipline of geography that derives from a study of cities and urban processes. Urban geographers and urbanists [1] examine various aspects of urban life and the built environment. Scholars, activists, and the public have participated in, studied, and ...
Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level varies in different countries due to different reference points and historic measurement periods.