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6 Cards in this Set

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Define Population

* A population describes a group of individuals of the same species occupying a specific area at a specific time.

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.

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.

Fertility

TFR: Total fertility rate is the average number of births per woman of child-bearing age.

Doubling times

* This is the time it takes for a population to double in size.




* Doubling time=70/percentage growth rate.

Death rates

* CDR: Crude death rate is the number of deaths per thousand people in population.

* CDR= number of deaths/total population X 1000.