Factors affecting mortality

Factors affecting mortality - while population increased at...

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Factors affecting mortality 1. Endogenetic processes. These refer to internal/bodily factors, such as disease. 2. Exogenetic processes. These refer to external factors such as the environment. Other indices to gauge components of poulation change are o Life Expectancy. This is the the number of years a child can expect to live under current conditions. It is also the average length of life of a defined population. o The Natural Increase. It is calculated by the formula CBR - CDR / Total Population x 100 Malthus Thomas Malthus, was a British Clergyman/economist. He came up with the Malthusian Theory of Population Growth. The salient points of his theory were 1. Food production increased at an arithmetic ratio (1, 2, 3.
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Unformatted text preview: ..) while population increased at an exponential ratio (1, 2, 4, 8. ..). 2. Population growth would outstrip food supply, and mass starvation would follow. 3. Man is incapable of controlling his own numbers, so natural calamities such as floods and epidemics serve to control/reduce his numbers. • His theory was wrong in a number of ways: 1. He failed to foresee the agrarian revolution that would greatly increase food production. 2. Man has proven he is capable of controlling his numbers, such as in China withe the one-child per family policy. 3. The population has not grown as rapidly as he predicted....
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This note was uploaded on 11/10/2011 for the course GEA GEA2000 taught by Professor Wong,faith during the Fall '09 term at Broward College.

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