What is natural increase?

birth rate minus death rate. Migration is not included.

What is a pro-natalist policy?

a policy to encourage births. It is used by countries with low birth rates.

In which stage of the DTM does population grow fastest?

stage 2. The death rate has fallen but the birth rate is still high.

Which is a limitation of the DTM?

It does not take migration into account. Migration can change a population greatly.

Where is population growing fastest today?

low-income countries, especially in Africa. Birth rates there are still high while death rates have fallen.

Population growth and decline · Cambridge IGCSE Geography (9

In plain words

There are more than eight billion people on Earth, and the number is still rising. But it is not rising everywhere. Some countries double in a generation, and others are shrinking. The difference comes down to births, deaths and migration.

8 things to know

World population grew slowly for most of history, then very rapidly from about 1950. Growth is now fastest in low-income countries, especially in Africa, and is slow or negative in many high-income countries.
The birth rate is the number of live births per 1000 people per year. The death rate is the number of deaths per 1000 people per year.
Natural increase is the birth rate minus the death rate. The fertility rate is the average number of children a woman has.
A country's population changes through natural increase and through migration.
Birth rates are high where children are needed to work and to support parents in old age, where many infants die, and where women have little education or access to contraception. Death rates fall with better healthcare, clean water and food.
A pro-natalist policy encourages people to have more children, with payments, paid parental leave and cheap childcare. An anti-natalist policy tries to reduce births, with family planning, education, incentives or penalties.
The demographic transition model (DTM) shows how birth and death rates change as a country develops, in five stages: both high; death rate falling; birth rate falling; both low; birth rate below death rate.
The model's strengths: it is simple, it lets countries be compared, and it helps to predict change. Its limitations: it is based on what happened in Europe, it ignores migration, government policy and events such as war, and it gives no timescale.

Worked example

A country has a birth rate of 34 per 1000 and a death rate of 9 per 1000. Calculate its natural increase, and state the stage of the DTM it is in.

Natural increase = 34 − 9 = 25 per 1000, which is 2.5% a year.
The birth rate is high and the death rate has fallen to a low level.
That is stage 2 of the model: rapid population growth.

Tips and tricks

Natural increase leaves out migration. If a question says "population change", migration may need mentioning.
For policies, describe what the government did and then say what happened as a result. An evaluation needs both.

6 questions, about 2 minutes.

It lands in your notebook with its questions as flashcards.

Population growth and decline: 6 questions and answers

These are the quiz’s questions. Do the quiz first, then come back here for the ones that got you.

What is natural increase?
- births plus deaths
- birth rate minus death rate (the answer)
- immigration minus emigration
- the fertility rate
Migration is not included.
A country has a birth rate of 20 and a death rate of 8 per 1000. What is its natural increase?
- 28 per 1000
- 12 per 1000 (the answer)
- 2.5 per 1000
- 160 per 1000
20 − 8.
What is a pro-natalist policy?
- a policy to reduce births
- a policy to encourage births (the answer)
- a policy on migration
- a policy on healthcare for the elderly
It is used by countries with low birth rates.
In which stage of the DTM does population grow fastest?
- stage 1
- stage 2 (the answer)
- stage 4
- stage 5
The death rate has fallen but the birth rate is still high.
Which is a limitation of the DTM?
- It shows birth and death rates.
- It does not take migration into account. (the answer)
- It can be used to compare countries.
- It has stages.
Migration can change a population greatly.
Where is population growing fastest today?
- high-income countries in Europe
- low-income countries, especially in Africa (the answer)
- Antarctica
- Japan
Birth rates there are still high while death rates have fallen.

6 questions

Tap an answer and you’ll see straight away whether it’s right, and why.

Worksheet

3 questions, 10 marks. Write your answers on paper, then check them.

Population growth and decline

Cambridge IGCSE Geography (9–1) 0976 · 10 marks · papermunch.org

Name ______________________________ Date ______________

Define birth rate and natural increase.[2]
Show answerHide answer
The birth rate is the number of live births per 1000 people per year. Natural increase is the birth rate minus the death rate.
I got this one
Explain two reasons why birth rates are high in some low-income countries.[4]
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Children are needed to work on the land and to look after their parents in old age. Many women have little education or access to contraception. (Also: high infant mortality, so parents have more children.)
I got this one
Describe two limitations of the demographic transition model.[4]
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It is based on the experience of European countries, so others may not follow it. It does not include migration or the effect of government policies.
I got this one

Answers: Population growth and decline

1. The birth rate is the number of live births per 1000 people per year. Natural increase is the birth rate minus the death rate.
2. Children are needed to work on the land and to look after their parents in old age. Many women have little education or access to contraception. (Also: high infant mortality, so parents have more children.)
3. It is based on the experience of European countries, so others may not follow it. It does not include migration or the effect of government policies.