Unit 2: People and the Planet

Revision lesson 1 of 3

Learning objective

To revise

TOPIC 1: Population dynamics

KEY CONCEPT

S

BIRTHS IMMIGRANTS

DEATHS EMIGRANTS

POPULATION

Birth and Death rates change as a country becomes wealthier – WHY?

Country Stage in DTM

Birth rate

Death rate

Natural change

Swaziland 1 27.0 30.4 - 3.4

Cambodia 2 25.5 8.2 + 17.3

Chile 3 15.0 5.9 + 9.1

UK 4 10.7 10.1 + 0.6

Germany 5 8.2 10.7 - 2.5

Youthful population = ? Ageing population = ?

The Demographic Transition Model

1) Development of modern medicines. This has meant that more and more people are kept alive due to modern practices.

2) Introduction of vaccination and immunisation programmes e.g. smallpox vaccination that helps people to live longer.

3) Cleaner drinking water and better sewage disposal, a lot more people have access to clean drinking water than before.

4) Better healthcare systems – more doctors, nurses and hospitals, means that people can be treated and not die.

5) More hygienic housing and lifestyles. 6) Better diets, e.g. promoting eating ‘5 a day’

Reduction in death rates – WHY?

Population Pyramids

Which population pyramid is which?

(Germany, Kenya and USA)

Youthful population - MexicoThis is when a country has a very high percentage of people under the age of 15.

Problems:• Pressure on housing – not enough housing, people living in slums. This is very common around the big cities (New Delhi), where millions of people live in shanty towns with no running water, roads, sewage of any kind. • Pressure on schooling – illiterate population. India’s literacy rate is 60%• Pressure on food supplies - famine, food distribution difficulties. • Pressure on health services – a growth in diseases being spread around and not being dealt with adequately to stop the spread.

Ageing population - JapanThis is when a country has a very high percentage of people over the age of 65.

Problems Solutions

Health care Provide more health care e.g. retirement homes, hospital

beds, more undertakers, etc. Skilled health care workers needed

Pensions Increase tax – not popular Raise retirement age – not popular * this is likely

to happen in the UK soon* Abolish state pensions – not popular

Why and how can governments change their populations?

To stop the population getting too old (ageing) So they need more tax

payers/raise taxes To fill job shortages

Reduce strain on physical resources – water, food

Reduce strain on human resources – jobs, services

Encourage migrants to come Financial incentives for women

to have more children:o Better and longer maternity payo Cash - ‘Baby bonus’o Ongoing child benefit pay

Encourage emigration Financial rewards for having

less children Financial penalties for having

too many children

EXAMPLE: Estonia

WHY?

HOW?

Increase the population Decrease the population

EXAMPLE: China

Case Study: Pro-Natalist: Estonia

Case Study: Anti-Natalist – China’s one child Policy

http://www.bbc.co.uk/scotland/learning/chinastories/video_stories/liu_xiao/

Managing migration In 2004 the eastern European

countries of Czech Republic, Estonia, Hungary, Poland, Latvia, Lithuania, Slovakia and Slovenia joined the EU (A8 – Accession countries).

There has been a notable increase in migrants from these countries coming to the UK for work since 2004.

Migration: Advantages and Disadvantages for source and host countries

Example: Poland and the UK

Sample questions What changes have helped to lower the global

infant mortality rate? (2) How and why does the infant mortality rate

differ between developing and developed countries? (2)

Explain two problems faced by countries with ageing populations. (4)

Explain two problems faced by countries with youthful populations. (4)

Explain how governments can encourage an increase in the birth rate (4)

Using examples, explain the positives and negatives of migration on source and host countries (6)