Question

please didi and bhaiya plz give answer​

Answer 1

Answer:

hope this image helps you,,,

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Answer 2

1... The crude birth rate in a period is the total number of live births per 1,000 population divided by the length of the period in years. The number of live birth is normally taken from a universal registration system for births; population counts from a census, and estimation through specialized demographic techniques.

2....Life expectancy is a statistical measure of the average time an organism is expected to live, based on the year of its birth, its current age, and other demographic factors including biological sex. The most commonly used measure is life expectancy at birth, which can be defined in two ways.