2. Human Population:
⇢ Also referred to as World Population to denote the number of human
being currently alive on this planet called earth.
⇢ And currently it is estimated to have exceeded 7.9 billion in
numbers.
⇢ With China, India and United States of America being 3 biggest
countries in terms of population.
⇢ Population is often described as both advantageous and
disadvantageous as well.
3.
4.
5.
6.
7.
8.
9. Population distribution
⇢ Mountains in Africa & Latin America are much healthier than
plains, and large cities have sprung up at high altitude.
⇢ Low latitude areas are hot & less favourable, while high altitude
provides suitable conditions for human habitation.
⇢ La Paz( Bolivia Capital) ,a city in the Latin America, is said to be
the highest city in this world, with an altitude of 3640 m from sea
level.
⇢ But, other than that,generally we can see that people settling in
plains more than in mountains.
12. Because there are people around ...
⇢ There's Agriculture, Industries , labour etc...
⇢ And increase in production per capita of agricutural produce at a
global level ceased in 1980s.
⇢ And the greedy business strategies across sectors, for only short term
gains, have only helped to breakdown Earth's ability to replenish the
resources that we are so dependent on.
⇢ In some countries food shortages have become the norm.
14. Reasons for drastic growth of World
Population - J shaped Curve
1. Independence for 61 countries (1919 – 1985): Ceasing of freedom
struggle, death, killing, riots, violences.
2. Constitution: Law, Justice, Provision, Social Development, etc.
3. War: (World II Ended - 1945) Small wars (1898 – 1994)
4. Medical advances: Smallpox vaccine - 1899, Insulin – 1922,
Penicillin – 1942, Polio - 1955, Chemotherapy – 1956.
5. Agriculture development: Scientific research, Universities,
Invention, New topics – Genetics, Agronomy (1900 – TT)
15. contd..
6. Industrial development: Revolution – Expansion – Globalization.
7. Economic development: New ideas, management methods,
supply – demand ratio balance, Green-White revolution.
8. Settled Life: Proper education, medical, transport, security, food,
clothing, shelter, etc.
9. Transportation: Flight (1903), Automobiles (1939 – 1945),
Spaceflight (1950), High Speed Rail - Japan (1964) in Asia.
10. Communication: More than 20 inventions (1920 – 1990), 9
inventions (21st Century)
16. About the world's population
⇢ World’s population is now 7.6 billion, will be 11.2 billion in 2100. (50.4 % male &
49.6 % is female)
⇢ 80 years aged persons projected: from 137 million (2017) to 425 million (2050) &
909 million (2100)
⇢ 10 – 24 years aged are 1.8 billion, with 90 % of them live in developing countries.
⇢ Under 15 years aged are ¼ (26 %), 9 % under age 5 years.
⇢ 41 % of India's population is (less than 20 years) compared to 24 % of the world's
young population.
⇢ 2.4 % of the world's land area, India 17 % (132 Cr) of the world population 2nd
largest after China.
17. contd..
⇢ By 2024, India will overtake China.
⇢ Urban shift of people in millions by 2050: (70 %) Tokyo - 37,
Delhi – 29, Shanghai – 26.
⇢ Global fertility reduced from 2.5 children per woman (2010 –
2015) to 2.0 (2095 – 2100)
⇢ 20 % Women in poorest countries have the least access to
sexual and reproductive health services.
⇢ 56 million abortions worldwide / year are unsafe, leading to the
deaths of 22,800 women / year.
18. contd..
⇢ Globally 800 women die / day due to pregnancy-related
complications & 20 % from India.
⇢ Globally 46 % & in India 47 % of girls are married before the age
of 18.
⇢ Globally 30 % of population growth in the world is due to
unwanted & accidentals pregnancies.
⇢ Global maternal mortality rate declined by 44 %, in India by 83 %
19.
20. Cause of growth:
1. Rise in Birth Rate: Nutritional – Agricultural – Medical Science development,
boost birth rate in human beings.
2. Reduced Mortality Rates: Improved medical technology (vaccines and
antibiotics), cures fatal diseases.
3. Fertility Treatment: Improved fertility treatments have made it possible for more
people to have children.
4. Lack of Education: Illiteracy fails to make understand the need to prevent
excessive growth of population.
5. Child Labor: UNICEF (150 million children) no law countries. Seen as source of
income by poor families.
6. Immigration: Unchecked immigration into countries may lead to overpopulation
(Rohingyas)
21. Effects of Overpopulation
1. Depletion of Natural Resources: Forest, Wildlife, Pollution, Water &
Food Scarcity.
2. Degradation of Environment: Overuse of coal oil & natural gas, global
warming,climate change, rise in sea level.
3. Conflicts & Wars: Resource use & Water War.
4. Starvation: Huge issue facing the world & the mortality rate for
children is being fueled by it.
5. Rise in Unemployment: Fewer jobs to support large number of
people. Crime,Corruption, Harassment.
6. High Cost of Living: Demand Vs Supply will expand, rise in price food,
shelter &Medical.
22. contd..
7. Poverty & famine: Politics, Unequal distribution of food, leads socio-
eco inequality,lack of democracy & civil war.
8. Impact on the environment (I) = PAT [Size of the Population (P),
Consumption Level(A) & Technology used (T)].
9. Migration: Economic Disparity, badly paid labour & low standard of
living.
10. Lack of Water: More demand on freshwater supply, Roughly 1%
available &accessible.
11. Lower Life Expectancy: High life expectancy in HDC, low in less
developed nations.
23. contd..
12. Extinction: Demand for land = Destruction of forest, 50% of
wildlife species at risk.
13. Resource Consumption: Food, water & fossils consumed &
demanded at record rates.
14. Intensive Farming: Damage to local ecosystems, climate change
by machines.
15. Climate Change: US, China & India largest contributors to
emissions in the world
25. Women and Child Welfare
⇢ A country like India has predominantly been patriarchal society.
⇢ And historically, with few exceptions, women have always been
dependent on the other gender for everything.
⇢ Reducing them to a machine which works for the family and it's
expansion.
⇢ Also , living in the face of an era which supports, dowry and female
foeticide, has not been helping them at all.
⇢ And it has not been that long since, the Sati pratha was abolished.
⇢ Historically, they have always been Oppressed.
26. contd..
⇢ And women tend to look after the children after they give birth.
⇢ Ill-informed mother or any parent may push their child into work,
denying them education.
⇢ May also not provide the children with proper food necessary for
growth.
⇢ And without proper education, it is hard to uplift that person's life to
higher standards.
⇢ And may in turn lead to no family planning when they are of age to
marry. Causing, further overpopulation.
27. Solution:
⇢ That's why there's an urgent need to address women's and children's
problems at the earliest.