Population growth

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HUMAN POPULATION GROWTH

• Report of Jamaica Olazo

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Thomas Malthus

• the power of population growth is greater than
  the power of Earth to produce subsistence.

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BASIC CONCEPTS of Population Growth
Biosphere all life on Earth
Population all members of a single species
living in a given time and place and actually or
potentially interbreeding.
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BASIC CONCEPTS of Population Growth
Species all individuals that are capable of
interbreeding and is made up of populations.
Ecosystem all the interacting populations in a
given time and place.
Communities all the organisms and their
non-living environment in a defined area.
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BASIC CONCEPTS of Population Growth
Sex Ratio and Age Distribution together they
tell how a population will grow.
Sex Ratio relative number of males and females
in a population.
Age Distribution number of individuals of each
age in a population.
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DEMOGRAPHY
study of populations, their characteristics and
changes.
Demographers

• study population size
• density and distribution
• age structure
• sex ratio
• Birth rate
• Death rate
• Immigration and
• emigration rates

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Three Technological Eras
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7B
6B
5B
4B
3B
2B
1B
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Affecting
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FACTORS
HUMAN
Population Size
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Affecting
FACTORS
Population Size
HUMAN

• Change in population size
• (births deaths) (immigrants emigrants)

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POPULATION
MOVEMENTS
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POPULATION MOVEMENTS
Migration permanent change of residence of a
person or group.
Emigration movement of people out of a
country. Immigration movement of people into a
country.
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Circumstances in the country or origin that lead
people to emigrate.

• Push factors

1. No job opportunities
2. Poverty
3. War and
4. Environmental disasters

Conditions in the destination country that make
emigration attractive.

• Pull factors

1. Economic opportunity 2. Political freedom
and (i.e. Democracy) 3. Better standards of
living
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Affecting
FACTORS
Population Size
HUMAN

• Change in population size
• (births deaths) (immigrants emigrants)
• 2. (Crude) Birth rate - the number of individuals
  born during a specified time interval.

Natural increase when the birth rate is higher
than the death rate, more people are being born
than are dying so the population grows.
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Affecting
FACTORS
Population Size
HUMAN

• 3. (Crude) Death rate - the number of individuals
  who die during a specified time interval.

Natural decrease when the death rate is higher
than the birth rate.
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Demographic Transition Model
- is an important factor in population growth.

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Affecting
FACTORS
Population Size
HUMAN

• 4. Total Fertility Rate (TFR) the average
  number of children a woman has during her
  reproductive years.
• Biotic potential the maximum rate at which a
  population could increase when birth rate is
  maximal and death rate minimal.
• 5. Replacement Fertility - number of children
  needed to replace everyone in the population.
• Zero Population Growth
• birth rate death rate.

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Philippine time 22445
Source http//www.worldometers.info/world-populat
ion/
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FACTORS AFFECTING
Rates
Birth
TOTAL FERTILITY
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FACTORS AFFECTING

1. Children in labor force

Rates
Birth
TOTAL FERTILITY
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FACTORS AFFECTING

1. Children in labor force
2. Cost of raising and educating children

Rates
Birth
TOTAL FERTILITY
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FACTORS AFFECTING

1. Children in labor force
2. Cost of raising and educating children
3. Urbanization

Rates
Birth
TOTAL FERTILITY
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FACTORS AFFECTING

1. Children in labor force
2. Cost of raising and educating children
3. Urbanization
4. Education level and employment for women

Rates
Birth
TOTAL FERTILITY
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FACTORS AFFECTING

1. Children in labor force
2. Cost of raising and educating children
3. Urbanization
4. Education level and employment for women
5. Infant mortality rate

Rates
Birth
TOTAL FERTILITY
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FACTORS AFFECTING

1. Children in labor force
2. Cost of raising and educating children
3. Urbanization
4. Education level and employment for women
5. Infant mortality rate
6. Populations religious beliefs, customs and
   traditions

Rates
Birth
TOTAL FERTILITY
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FACTORS AFFECTING

1. Children in labor force
2. Cost of raising and educating children
3. Urbanization
4. Education level and employment for women
5. Infant mortality rate
6. Populations religious beliefs, customs and
   traditions
7. Average marrying age

Rates
Birth
TOTAL FERTILITY
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FACTORS AFFECTING

1. Children in labor force
2. Cost of raising and educating children
3. Urbanization
4. Education level and employment for women
5. Infant mortality rate
6. Populations religious beliefs, customs and
   traditions
7. Average marrying age
8. Availability of birth control and abortions

Rates
Birth
TOTAL FERTILITY
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MEGACITIES
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MEGACITIES
- is usually defined as a metropolitan area with
a total population in excess of ten million
people.
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• As of 2013, there are 24 megacities in existence
  according to the Population Reference Bureau.

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MEGACITIES
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Rank Megacity Country Population
1 Tokyo  Japan 34,800,000
2 Guangzhou  China 31,700,000
3 Shanghai  China 28,900,000
4 Jakarta  Indonesia 26,400,000
5 Seoul  South Korea 25,800,000
6 Delhi (India)  India 24,000,000
7 Mexico City  Mexico 23,800,000
8 Karach  Pakistan 23,500,000
9 Manila  Philippines 22,200,000
10 New York City  United States 21,600,000
11 São Paulo  Brazil 21,600,000
12 Mumbai  India 21,400,000
13 Beijing  China 19,300,000
14 Los Angeles  United States 17,200,000
15 Osaka  Japan 16,800,000
16 Dhaka  Bangladesh 16,300,000
17 Cairo  Egypt 16,100,000
18 Kolkata  India 16,000,000
19 London  United Kingdom 15,500,000
20 Buenos Aires  Argentina 14,500,000
21 Bangkok  Thailand 14,500,000
22 Istanbul  Turkey 14 160 467
23 Lagos  Nigeria 13,200,000
24 Tehran  Iran 13,200,000
MEGACITIES
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Riches can reach me! -Moon
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Buy more!!!
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CFC Emission
Hello! Im 100 FOSSIL FUEL ?
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POPULATION
Comparisons
TREND
DEVELOPING COUNTRIES
High infant mortality rate
Life expectancy of 52 years
Total fertility rate 5.7
Per capita GDP 800
Developed Countries - is a sovereign state that
has a highly developed economy and advanced
technological infrastructure relative to other
less industrialized nations.
DEVELOPED COUNTRIES
Low infant mortality rate
Life expectancy of 77 years
Total fertility rate 2.0
Per capita GDP 36,110
Developing Countries - also called a
less-developed country (LDC),is a nation with a
lower living standard, underdeveloped industrial
base.
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Major Social Factor Determining Family Size is
the ROLE OF WOMEN IN SOCIETY

• Early marriages faster high fertility rates.
• Lack of education opportunities for women reduces
  their options.
• When level of education increases, fertility
  rates fall.
• The most important factor is the ability of women
  to control the size of their family.
• Access to birth control is key

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ISSUES
HUMAN
POPULATION
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PROBLEMS Safety Unhygienic Limited
Space Psychological welfare
In 2007, there were approximately 53,200 people
living in caged homes.
Cage home refers to a type of residence that is
big enough for one bunk bed and surrounded by a
metal cage.
CAGE PEOPLE IN HONGKONG
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A TRIP TO INDIA
Home to 17 per cent of all people in the world.
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Undesirable Impacts
of Urban Sprawl
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• Lost of crop lands, forest lands, and Wet lands

Undesirable Impacts Of Human Sprawl
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Fragmenting fish and wildlife habitats.
Undesirable Impacts Of Human Sprawl
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Increased impervious surfaces means more flooding.
Undesirable Impacts Of Human Sprawl
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• Family planning
• Improve health care
• Elevate the status of women
• Increase education
• Involve men in parenting
• Reduce poverty
• Sustainability
• Equal distribution of wealth

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Cutting Global Population Growth
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