Matching Pairs Demographic Terms extendedOnline version here are the key words and their definitions that we will use in this population unit by Miss T Jack 1 Refugee 2 Dependency Load 3 Life Expectancy 4 Demography 5 Net Migration Rate (NMR) 6 Emigration Rate (ER) 7 Rule of 70 8 Rapid Growth pyramid 9 Birth Rate (BR) 10 Rate of Natural Increase (RNI) 11 Replacement Rate 12 Stable/declining Growth pyramid 13 Immigration Rate (IR) 14 Slow Growth pyramid 15 Death Rate (DR) 16 Working Cohort the relationship between the # of births and the size of the population. the difference between births (BR) and deaths (DR) that tells us if the population is growing without migration the ages of 15-64 in a population pyramid that are not considered part of the dependency load the difference between people coming (IR) and people leaving (ER) the # of people who permanently leave their home country with the intention of staying there very few babies are being born and more people who have lived long lives are dying of old age the percentage of a country’s population who are younger than 15 and older than 65 (i.e. financially rely on others) how long a person is predicted to live. all ages are roughly equal; fewer babies are now being born; representative of Canada the relationship between the # of deaths and size of the population. the formula to determine how quickly a population doubles in size has many babies being born and few people living a long life the study of human population numbers, distribution, trends, and issues. someone who flees their homeland for fear of their life but will return home when it is safe to do so the (“magic”) number of 2.1 children to keep the population stable the # of people who permanently move to another country