The growth of population refers to the increases in the number of inhabitants of a country during specific **.
- It is estimated that the world population reached one billion for the first time in 1804.
- Due to the impact of the industrial revolution & improvement in living standards, the rate of population growth increased two billion in 1927.
- At present estimate of 2013 the globe is inhabited by 7121 million population.
- During the begining of 20th century the world population was only 2 billion and century ended with 6 billion. It continues to grow even in the 21st century.
Stages of Population growth:
I Three billion – July 1959
II Four billion – April 1974
III Five billion – July 1987
IV Six billion – 12th October 1999
V Seven billion – 12th March 2012.
