Demographic economic problems

undesirable condition where human numbers exceed the current carrying capacity of the environment

thumb|Thomas Robert Malthus, after whom Malthusianism is named Malthusianism is a theory that population growth is potentially exponential, according to the Malthusian growth model, while the growth of the food supply or other resources is linear, which eventually reduces living standards to the point of triggering a population decline. This event, called a Malthusian catastrophe (also known as a Malthusian trap, population trap, Malthusian check, Malthusian snatch, Malthusian crisis, point of crisis, or Malthusian crunch) has been predicted to occur if population growth outpaces agricultural

scientific work by Meadows et al.

depopulation in humans is any great reduction in a human population caused by events such as long-term demographic trends

population shift from rural to urban areas

sociological process affecting cities

age at which a person is expected or required to retire

total fertility rate that (if sustained) leads to each new generation being less populous

age-population ratio of those typically not in the labor force (the dependent part ages 0 to 14 and 65+) and those typically in the labor force (the productive part ages 15 to 64)

shortfall in the number of women relative to the expected number of women in a region or country

economy made up of constant physical wealth and population size

predicted difficulty in maintaining pensions

phenomenon in political science