Question

What is population growth? How is it determined?

Answer 1

Population growth refers to the change in number of people of a territory during a specific period of time. Such a change can be expressed in two ways:
(i) In terms of percentage change per year: The rate or the pace of population increase is studied in per cent per annum. This is referred to as the annual growth rate. E.g., a rate of increase of 2 per cent per annum means that in a given year, there was an increase of two persons for every 100 persons in the base population.
(ii) In terms of absolute numbers: The absolute numbers added each year or decade is the magnitude of increase. It is calculated by simply subtracting the earlier population from the later population. It is referred to as the absolute increase.