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APHUG Unit 2 Vocab

APHUG unit 2 vocab

QuestionAnswer
Age Distribution is two back-to-back bar graphs, one showing the number of males and one showing females in a particular population in five-year age groups.
Carry capacity This is the population level that can be supported, given the quantity of food, habitat, water and other life infrastructure present. This is important because it tells how many people an area will be able to support.
Cohort Population of various age categories in an age-sex population pyramids. This is important because this can tell what state this country it is whether in Stage 3 or Stage 5 in the demographic transition model
Demographic equation The formula that calculates population change
Demographic momentum this is the tendency for growing population to continue growing after a fertility decline because of their young age distribution. This is important because once this happens a country moves to a different stage in the demographic transition model.
Demographic regions Stage 2 (High Growth)Stage 3 (Moderate Growth)Stage 4 (Low Growth)). This is important because it shows how different parts of the world are in different stages of the demographic transition.
Demographic Transition model Has 5 steps. Stage 1 is low growth, Stage 2 is High Growth, Stage 3 is Moderate Growth, and Stage 4 is Low Growth and Stage 5 although not officially a stage is a possible stage that includes zero or negative population group.
Dependency ratio : The number of people who are too you or too old to work compared to the number of people in their productive years.
Diffusion of fertility control The diffusion of fertility control is spread throughout the worldThis is important because its shows how many kids a mother is having thus helping to see where the countries are growing rapidly and where countries are leveling off.
Disease diffusion There are two types, contagious and hierarchical. Hierarchical is along high density areas that spread from urban to rural areas. Contagious is spread through the density of people.
Doubling time The number of years needed to double a population, assuming a constant rate of natural increase. This is important because it can help project the countries population increase over the years and when its population will double.
Created by: amblanshan
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