Answers

2014-12-27T21:13:25+05:30
Age structure is defined as the no of people in different age groups in a country. Age structure shows the development of a country. Death rate is defined as the no of death for 1000. Birth rate is defined as the no of birth per 1000
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2014-12-27T21:15:49+05:30
Age structure;-age structure of a population is distribution  of people among various ages
birth rate:-number of live births per 1,000 of a population in a year.
death rate;-number of deaths per 1,000 of a population in a year.
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