What is population doubling time? Explain the characteristics of the growth of population in India in Phase I and II.

Explanation

Population Doubling time is the time taken by any population to double itself as its current annula growth rate .
Characteristics of the population growth in Phase I :
• This phase (1901-21) is known as a period of stagnant or stationary phase.
• Growth rate was very slow, even recording a negative growth rate during 1911-1921.
• Both the birth rate and death rate were high keeping the rate of increase low.
Characteristics of the population growth in Phase II:
• This phase (1921-1951) is known as steady population growth.
• Improvement in health and sanitation brought down the mortality rate.
• Crude birth rate remained high leading to higher growth rate.