HSCI 130 Lecture Notes - Lecture 7: Demographic Transition, Demography, Industrial Revolution
13 Mar 2018
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Document Summary
Animal domestication and agriculture: priced for a few to feed many. Industrial revolution: growth of cities and infrastructure such as water, energy and transportation. What"s behind population growth? systems, as well as increased productivity, nutrition, sanitation and medicine. Population growth = population growth is the increase in the number of individuals in a population. It is the function of natural increase and net migration. Migration does not play a role at a global level. Took until the 1800"s to reach our first. Population (t + n) = population (t) + (births - deaths) + (in - out migrants) billion people and now over 7. 2 billion, but expect to reach 9 billion by mid-century. Natural increase - peaked at 2. 1% (1965) and now 1. 1% (population doubles every 54 years) World population = 7. 2 billion + (natural increase) (net migration) (~ 75 millin/yr) + (0 + aliens) Slowing of growth: there are changes in population growth over time.
