Answer:
When
there is a sudden fluctuation in population or the growth rate declines, it is
called demographic divide.
(i) In India, it took place in 1981 as the rate of growth started
declining gradually.
(ii) It happened as the birth rate declined rapidly during
this period.
(iii) Since 1981, birth rates declined, resulting in a
gradual decline in the rate of population growth.
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