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Population Population Studies Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

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Page 1: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Relationships:Relationships:

Population Population StudiesStudies

In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990

United Nations

Page 2: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Do you know?According to papers published by the United States Census Bureau, the world population hit 6.5 billion (6,500,000,000) on February 25, 2006. It is estimated that by 2012, the Earth will be home to 7 billion. The United Nations Population Fund designated October 12, 1999 as the approximate day on which world population reached 6 billion. This was about 12 years after world population reached 5 billion, in 1987.

In 2007 the United Nations Population Division projected that the world's population will likely surpass 9 billion in 2050. The last 50 years have seen a rapid increase in population due to medical advances and substantial increase in agricultural productivity, particularly in the period 1960 to 1995 made by the Green Revolution. (Source: Wikipedia)

Page 3: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

World Population at 2008

6.7 billion

Now?

Source: The Straits Times (11 Jul 2008)

Page 4: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Top 10 countries with largest population (millions) – 2008

1. China 1330.02. India 1148.03. U.S 303.84. Indonesia 237.55. Brazil 191.96. Pakistan 167.87. Bangladesh 153.58. Nigeria 146.39. Russia 140.710. Japan 127.3

Source: The Straits Times (11 Jul 2008)

Page 5: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Birth Rate and Death Rate (per day)

• In one day all over the world, an estimated 369,755 people are born and 150,835 die.

• 218,920 people are added to the global population daily

• http://www.worldometers.info/

Source: The Straits Times (11 Jul 2008)

http://www.worldometers.info/
Page 6: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Rural Urban Migration

• Urban populations continue to expand, adding pressure to resources and the environment

Source: The Straits Times (11 Jul 2008)

Page 7: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Top 10 most densely populated countries and territories (humans/sq km)1. Monaco 168182. Macau 163413. Singapore 66524. Hong Kong 64275. Gibraltar 43086. Vatican City 18737. Malta 12778. Maldives 12649. Bermuda 124810. Bahrain 1080

Source: The Straits Times (11 Jul 2008)

Page 8: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Why study Why study Population?Population?

How land is usedHow land is used

The amount of pressure on natural The amount of pressure on natural resourcesresources

PLANNING – how govt formulate PLANNING – how govt formulate policiespolicies

How people interact with one How people interact with one anotheranother

Page 9: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Terminologies

Page 10: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

TerminologiesTerminologiesBirth rate (BR)Birth rate (BR)

Number of live births Number of live births per 1000 peopleper 1000 people in the in the population population per yearper year

XX per thousand per thousand

What are the reasons for low and high BR?What are the reasons for low and high BR?

Death rate (DR)Death rate (DR)

Number of deaths Number of deaths per 1000 peopleper 1000 people in the in the population population per yearper year

YY per thousand per thousand

What are the reasons for high and low DR? What are the reasons for high and low DR?

Page 11: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

TerminologiesTerminologies Infant Mortality (IM)Infant Mortality (IM)

Number of infants who die before Number of infants who die before reaching one year of age per 1000 reaching one year of age per 1000 live births per year live births per year

Natural increase (NI)/rate of natural Natural increase (NI)/rate of natural increaseincrease

• NI = BR – DR (per thousand)NI = BR – DR (per thousand)

• NI is +ve means …NI is +ve means …

• NI is –ve means …NI is –ve means …

Page 12: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

TerminologiesTerminologies Replacement levelReplacement level

• It is the level of fertility at which a given It is the level of fertility at which a given population is replacing itselfpopulation is replacing itself

Life expectancy (LE)Life expectancy (LE)

• No of years a person is expected to live from No of years a person is expected to live from time to timetime to time

Dependency RatioDependency Ratio

o the ratio of the number of economically non-the ratio of the number of economically non-active to the number of economically active active to the number of economically active people in the countrypeople in the country

o 1 : 2 means …1 : 5 means …Implications …?1 : 2 means …1 : 5 means …Implications …?

Page 13: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

How long are you expected to live?

Page 14: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Total Population Total Population ChangeChange

TOTAL POPULATION CHANGE

Birth Rate

Death Rate

Immigration

Emigration Population Growth Population Growth = natural = natural

increase + net migrationincrease + net migration

Page 15: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Population Explosion

Page 16: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

World’s World’s Population TrendPopulation Trend

Page 17: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Regional Population Trend

Page 18: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Population Population ExplosionExplosion

Until about 200 years ago, population growth was slow.

Since then, there had been an enormous increase (previous graph).

Population Explosion: sudden and great increase in world’s population.

Rate of increase has become exponential.

Check out the world population clock at http://www.ibiblio.org/lunarbin/worldpop

http://livepage.apple.com/
Page 19: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Pair share

Suggest reasons for high birth rates

Page 20: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

CausesHigh BR - Parents want children

for labour especially in agricultural societies

to look after them in old age

to continue the family name

for added status in the community

to replace children who have died (high infant mortality rate)

Page 21: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Pair share

Suggest reasons for low death rates

Page 22: Relationships: Population Studies In 1999, 600 million children in the world lived in poverty – 50 million more than in 1990 United Nations

Causes

Low DR

clean water is available

access to food supply

improve hygiene and sanitation

better vaccinations and healthcare

rising standards of living


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