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Little Ice Age (LIA) was used to refer to Earth’s most recent 4,000-year period of mountain-glacier expansion and retreat. It appears to have been strongest…

Life Expectancy refers to the expected number of years remaining for an individual at any given age. It is a statistical measure of the average…

Dark Ages refers to the movement of so-called barbarian peoples—including the Huns, Goths, Vandals, Bulgars, Alani, Suebi, and Franks—into what had been the Western Roman…

Late Middle Ages Crisis describe the period about fourteenth and fifteenth centuries, which were altered the structure of European society. At the end of 13th…

Classical Demography actually focuses on the absolute number of people, who were alive in civilizations around the Mediterranean Sea between the Bronze Age and the…

Population Dynamics is the sequence of population changes characteristic of a particular organism, it also focuses on these changes — how, when, and why they…

Population Statistics is chosen to represent the population in a statistical analysis. It is related to social demography and demography.  A population consists of everything…

This article describe about Medieval Demography, which is estimates and seeks to explain the number of people who were alive during the Medieval period, population…

Political Demography in all its facets—fertility, net migration, mortality, population size, age structure, the first and second demographic transitions—is a vital ingredient in shaping the…

This article talks about Demographics of the World, which include population density, ethnicity, education level, health measures, economic status, religious affiliations and other aspects of…

Senescence is the combination of processes of deterioration which follow the period of development of an organism. It is the gradual deterioration of function characteristic…

Hormesis is a central feature within the lives of individuals challenged by daily stresses. It is a fundamental biological concept at the core of evolutionary…