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Positive Checks
inclucde every cause which tends to cut off mankind in a violent manner. those checks on population which ensue during a crisis of overpopulation; these might include, war, famine, disease, revolution, and so forth
Preventive Checks
Preventive checks (factors reducing births) Moral restraint Contraception Abortion
germ theory
Disease and illness = spirit possesions. Germs make people sick
Natural Increase
population increase due to more births and less mortality
Infant Mortality
number of deaths of infants (one year of age or younger) per 1000 live births
Replacement Level
level of fertility at which a population exactly replaces itself from one generation to the next. In developed countries, replacement level fertility can be taken as requiring an average of 2.1 children per woman.
Child Mortality
death of infants and children under the age of five.
Life Expectancy
average number of years of life remaining at a given age
Population Distributiion
pattern of where people live
Population Composition
The distribution within a group of people of specified individual attributes such as sex, age, marital status, education, occupation, and relationship to the head of household.
Population Momentum
This phenomenon refers to the percentage of the population that are in their child bearing years who have not yet had children, and thus are scheduled to eventually have children which add to the population through reproduction. What happens to all people in country. What happens as generations grow older.
Population Density
measurement of population per unit area or unit volume
Mathus' Theory of Population
Population grows @ a different rate of time than food. Food=arithmatic, population-Expoentially --Can be managed * D.Rate = war, illness, etc. *B.Rate = Contraception, delyaed marriage, prolonged breastfeeding
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