Population Dynamics

Current population

7.9 B

Current population growth rate

1% per year

Population in 1950

2.6B

Population in 1999

6B

Population in October, 2011

7 B

Population in 1987

5B

Estimated increase in population growth

2B people in the next 30 years

Estimated increase in population

7.9 B tp 9.7 B by 2050, 11 B by 2100

7B people are concentrated in how much %of land

20%

Population density for underdeveloped countries

697 people per sqkm

Population density for developed countries

238 people per sqkm

Riverrine plains of Asia take up how much of the world’s land area?

1/5

In Europe-Share of land area, Share of population

1/25, 1/9, 2nd largest continent

Areas of moderate density

Central China

Central USA

Deccan Plateau

Tropical west Africa

Eastern Europe

Russia

Current Population is growing at a rate of

1% per year

Current avg population Change

81M per year

Annual growth rate in 1960

2% and above

Low Birth Rate

10-20

High Birth rate

40-50

Sex ratio from Census of India 2011

940

Sex ratio from Census of India 2001

933

Why is the mortality rate of females high?

Discrepancy in the sex ratio persists as female foeticide still continues in many parts of the country. Females are also discrimminated against and healthcare facilities fail to rech them.

Acc to World Bank 2021, the global female population %

49.6%

Acc to World Bank 2021, the global sex ratio is ________, and this translates to _______

982, 101.68 males per 100 females

Acc to estimates by 2014 revision of the World Urbanisation Prospects by UNDESA’s Population Division, the world’s population is becoming increasingly more concentrated where and how?

in urban areas, < ½ the population living in these areas

World Urban population is estimated to surpass

6B by 2045

In the 21st C there is a need forSustainable development of small towns and big cities so that

growing population face no death of basic necessities.

Countries with lowest birth rate(2020)

Monaco

Saint Pierre & Miquelon

Andorra

Japan

Puerto Rico

Countries with highest birth rate(2020)

Niger

Angola

Mali

Uganda

Zambia