8.1 Human Population dynamics

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Last updated 7:11 PM on 4/20/24
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5 Terms

1
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Crude Birth Rate (CBR)

Number of births per 1000 people per year

  • (Total number of births/total population) X 1000

2
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Crude Death Rate (CDR)

Number of deaths per 1000 people per year

  • (Total number of births/total population) X 1000

3
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Natural Increase Rate (NIR)

(CBR - CDR)/10

4
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Doubling Time (DT)

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

  • 70/NIR

5
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Total fertility rate

The average number of births per woman of child-bearing age.