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year world population (millions) -10000 4 -8000 5 -7000 5 -6000 5 -5000 5 -4000 7 -3000 14 -2000 27 -1000 50 -750 60 -500 100 -400 160 -200 150 1 170 200 190 400 190 500 190 600 200 700 210 800 220 900 226 1000 310 1100 301 1200 360 1250 400 1300 360 1340 443 1400 350 1500 425 1600 545 1650 470 1700 600 1750 790 1800 980 1850 1260 1900 1650 1910 1750 1920 1860 1930 2070 1940 2300 1950 2400 ...
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All of the above are looked at over space and time. Population geography also studies human-environment interactions, including problems from those relationships, such as overpopulation, pollution, and others. [3] A few types of maps that show the spatial layout of population are choropleth, isoline, and dot maps.
Redone map based on the borders of the world as of December 31, 1999. 09:58, 19 December 2006: 1,427 × 628 (50 KB) Hoshie: Blank map of the world showing 2000 borders (i.e. before 9/11 and the independence of E. Timor and Montenegro). Based off Image:BlankMap-World.png; as it is PD, this is too.
Physics professor Albert Allen Bartlett at the University of Colorado Boulder warned in 2000 that overpopulation and the development of technology are the two major causes of the diminution of democracy. [181] However, over the last 200 years of population growth, the actual level of personal freedom has increased rather than declined. [136]
The national 1 July, mid-year population estimates (usually based on past national censuses) supplied in these tables are given in thousands. The retrospective figures use the present-day names and world political division: for example, the table gives data for each of the 15 republics of the former Soviet Union, as if they had already been independent in 1950.
Map of societies, 2000 BCE. Colour coded by cultural stage. Includes simple farming societies; complex farming societies (Near East, Europe, China, Andes); state societies (Fertile Crescent, Egypt, Indus, Crete, Caral/Norte Chico).
Overpopulation or overabundance is a state in which the population of a species is larger than the carrying capacity of its environment.This may be caused by increased birth rates, lowered mortality rates, reduced predation or large scale migration, leading to an overabundant species and other animals in the ecosystem competing for food, space, and resources.