Birth Rate
If the number of births at a given point in time is greater than the number of deaths, or if the mortality rate is lower or slower than the birth rate, the population will logically increase.
The Crude Birth rate is calculated as:
Crude Birth Rate (CBR) = (Annual births/ Annual mean population) × 1000
Discuss the Major Components of Population Growth
The major components of population growth include birth rate, death rate, and migration. The birth rate refers to the number of live births per thousand persons in a year and is one of the major components of population growth in India as birth rates have been always higher than death rates. Migration can be both internal as well as international, it doesn’t change the population but influences the distribution of population situated within the country an important role in changing composition as well as distribution of population.
The population is defined as a group of individuals or groups of the same species or society who live simultaneously in a particular dwelling or environment. Population growth was slow and stable till 1900, but exponential growth occurred after the 1930s following technological growth. In 1800, the earth was home to about 1 billion people. It took about 39 years of human history to reach 1 billion, 130 years to reach the second billion, 45 years to reach 4 billion, and the next doubling is likely within a span of a very few decades.
Table of Content
- Major Components of Population Growth
- Birth Rate
- Mortality Rate/ Death Rate
- Immigration and Emigration
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