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