Question

a) define demography
b) dependency ratio
c) annual growth rate
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Answer 1

Explanation:

1.the changing number of births, deaths, diseases, etc. in a community over a period of time.

2.The dependency ratio relates the number of children (0-14. years old) and older persons (65 years or over) to the working-age population (15-64 years old).

3. Annual Growth Rate of Population refers to the rate at which the number of individuals in a given popular increase over a year, expressed as a fraction of the initial popular of the previous years.