Note on Population Growth Rate and World Population

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The world's population has crossed 7 Arab in 2011 AD. In 1 AD, the total population of the world was 250 million, i.e. 25 crore only. The world population took about 1650 years to reach 50 crore. In 1820 AD, the population of the world reached 100 crore, i.e. 1 Arab. In 1930 and 1975 AD, the world’s population reached 3 Arab and 4 Arab respectively. The world’s population reached 5 Arab in 1987 AD.

World’s population in different duration

Duration 1800 1930 1960 1972 1987 1999 2011
Time taken to increase 1 Arab (years) All 130 30 14 13 12 12
Population (in Arab) 1 2 3 4 5 6 7

Source: Population Reference Bureau, 2011

The situation of population distribution in the world

Areas/Index Population (in 10 lakhs) Birth Rate (in 1000) Death Rate (in 1000) Growth Rate (in percent) Population Doubling Time
World 6987 20 8 1.2 58
Developed Areas 1242 11 10 0.2 350
Developing Areas 5745 22 8 1.4 50
Under-developed Areas 861 35 11 2.4 29
Africa 2051 36 12 2.4 29
North America 346 13 8 0.5 140
Latin America and Caribbean 596 18 6 1.2 58
Asia 4216 18 7 1.1 64
Europe 740 - 11 11 0.0
Oceania 37 - 18 7 1.2

Source: Population Reference Bureau, 2011

The population started to increase rapidly since the middle of 17th century. We can find that the population of Europe, Russia and America was increased rapidly before 1950 AD. This speed of population growth was found in China in about 1700 AD. Population expert Colin Clark expected that the world population would reach 3.5 Arab in 1900 AD. Next Population expert Notestine expected that the world population would reach 3.3 Arab in 2000 AD. But that expected population exceeded before 2000 AD. Similarly, the world’s population reached 6 Arab in 1999 AD. There was an increment of 1 Arab population in the world in a short duration of 12 years.

  • The world's population has crossed 7 arab in 2011 AD. In 1 AD, the total population of the world was 250 million, i.e. 25 crore only. The world population took about 1650 years to reach 50 crore. In 1820 AD, the population of the world reached 100 crore, i.e. 1 arab. In 1930 and 1975 AD, the world’s population reached 3 arab and 4 arab respectively. The world’s population reached 5 arab in 1987 AD.
  • The population started to increase rapidly since middle of 17th century. We can find that the population of Europe, Russia and America was increased rapidly before 1950 AD. 
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Very Short Questions

In a general sense, population refers to the total number of people living in a certain place over a certain time period. But the definition has become more comprehensive in the modern time. Now population refers to the 'cohort of an organized group of people'. This emphasizes the interrelationship of the members of a certain community. They share similar culture, social, economic as well as geographical backgrounds and maintain co-operation among themselves.
The total number of all individual units of peoples of a certain population is known as the size of the population. The size of the population is determined by three factors: birth, death and migration. Birth and immigration cause increase in the size while death and emigration cause decrease in the size of the population. Population growth rate is the rate at which the size of the population changes over a certain time period, mainly in a year's time. Thus, the changes in the size of population lead to the change in its growth rate.

The population started to increase rapidly since the middle of 17th century. We can find that the population of Europe, Russia and America was increased rapidly before 1950 AD. This speed of population growth was found in China in about 1700 AD. Population expert Colin Clark expected that the world population would reach 3.5 Arab in 1900 AD. Next Population expert Notestine expected that the world population would reach 3.3 Arab in 2000 AD. But that expected population exceeded before 2000 AD. Similarly, the world’s population reached 6 Arab in 1999 AD. There was an increment of 1 Arab population in the world in a short duration of 12 years.

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  • The world's population has crossed 7 Arab in ______.

    2001 AD


    1991 AD


    1911 AD


    2011 AD


  • In 1 AD, the total population of the world was ______.

    1 million


    100 million


    200 million


    250 million


  • The world’s population reached 5 Arab in ______.

    1997 AD


    1978 AD


    1987 AD


    2007 AD


  • How many years did the world population take to reach 50 crore?

    1650 years


    100 years


    1200 years


    12 years


  • What is the population growth rate of the world according to the census of 2011 AD?

    2 %


    2.3 %


    1.2 %


    1.35 %


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