Question

Explain the following (a)census (b)birth rate (c)death rate (d)sex ratio (e)density of population.

Answer 1

1.birth rate:- rate of addition of new born children in a population it is generally expressed as the number of births per year per thousand.
2.death rate:- death per thousand per year in a population.
3.sex ratio:-number of males per 100 females at a specific stage in life.
4.census:-an official survey especially of a population
5.density of a population:- For humans population density is the number of people per unit of a area.usually quoted per square kilometers or square mile.