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6 Cards in this Set
- Front
- Back
Define Population |
* A population describes a group of individuals of the same species occupying a specific area at a specific time. |
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3.1.1 Describe the nature and explain the implications of exponential growth in human populations. |
* Exponential growth is when the population is growing, and there are no limiting factors slowing the growth. * The world’s population is increasing very fast, this is due to many factors such as education, health, poverty, place of residence, and social class. |
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Birth Rates |
* Birth rates: CBR- Crude birth rate is the number of live births per 1000 people in a population.
* Total number of births/total population X 1000 = CBR. * CBR does not calculate the age and sex structure of the population. |
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Fertility |
TFR: Total fertility rate is the average number of births per woman of child-bearing age. |
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Doubling times |
* This is the time it takes for a population to double in size. * Doubling time=70/percentage growth rate. |
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Death rates |
* CDR: Crude death rate is the number of deaths per thousand people in population.
* CDR= number of deaths/total population X 1000. |