01:119:160 Lecture Notes - Lecture 3: Congenital Disorder, Intrauterine Device, Thomas Robert Malthus
1 Nov 2016
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Document Summary
Populations change in size very rapidly, often changes in local populations are noticeable in a person"s lifetime. The world population, the number of humans on earth, have increased since the emergence of. The population skyrocketed after the industrial revolution. In 1492 when columbus discovered america there was about 0. 25 billion people on. In 1650 there was about 0. 5 billion people. This growth has been interrupted temporarily by many factors including disease, war, famine, and other natural calamities. With an increased population we have various negative, adverse effects. Decrease in the amount of food available to an individual. Decrease in the number of jobs available to each individual. Population size cannot grow forever, it is limited by certain factors. Social forces (chinese saying one child only) Beneficial to have estimates of future population growths and distributions so we can plan for the future, we need to plan for:
