Population change — AQA A-Level Geography
Test yourself on Population change with AQA A-Level practice questions.
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Population change explained
Natural population change is driven by vital rates, specifically crude birth and death rates (per 1000 people).
Read the full explanation
The Demographic Transition Model (DTM) charts these changes across five stages. Age-sex composition, visualised via population pyramids, reveals dependency ratios. Cultural controls, such as beliefs on contraception or women's status, heavily influence fertility. Applying models to contrasting settings shows how physical factors (e.g., harsh climates) and human factors (e.g., urbanisation) alter transition speeds. The Demographic Dividend occurs when falling birth rates create a bulge in the working-age population, offering a window for rapid economic growth if sufficient jobs are available.
International migration: refugees, asylum seekers and economic migrants: environmental and socio-economic causes, processes. Demographic, environmental, social, economic, health and political implications of migration.
International migration involves refugees fleeing persecution, asylum seekers awaiting legal recognition, and economic migrants seeking better living standards. Causes are socio-economic, like poverty or conflict, and environmental, such as climate-induced droughts in the Sahel. Processes include step migration or human smuggling. The implications are vast: demographically, host nations gain working-age populations while origins suffer brain drain. Economically, remittances boost origin economies, but hosts may face wage depression. Socially and politically, migration can enrich cultures but also spark xenophobia and strain health services. Environmentally, rapid influxes can degrade local resources in refugee camps.
Your focus
- Interpret the Demographic Transition Model and population pyramids to explain historical and future natural population changes.
- Assess the influence of cultural controls and contrasting physical and human settings on a country's vital rates.
- Explain the conditions required for a country to achieve and benefit from a Demographic Dividend.
Show all 6 objectives
- Define and differentiate between refugees, asylum seekers, and economic migrants.
- Explain the environmental and socio-economic causes and processes driving international migration.
- Analyse the demographic, environmental, social, economic, health, and political implications for both host and source regions.
Population change exam tips
Marking Points
- Define and calculate key vital rates, including crude birth rate, crude death rate, and natural increase, expressing them accurately per 1000 of the population.
- Analyse the five stages of the Demographic Transition Model, explaining the socio-economic reasons for the changing relationship between birth and death rates.
- Interpret age-sex population pyramids to assess dependency ratios, life expectancy, and the impact of cultural controls like gender preferences or family planning policies.
- Evaluate the concept of the Demographic Dividend, explaining how a declining dependency ratio can stimulate economic growth, provided there is adequate investment in education and job creation.
- Apply population models to contrasting physical (e.g., resource-poor vs. resource-rich environments) and human (e.g., agrarian vs. post-industrial societies) settings.
- Distinguish between refugees (forced to flee due to fear of persecution) and asylum seekers (claimants awaiting refugee status).
- Explain socio-economic causes (e.g., wage differentials, conflict) and environmental causes (e.g., desertification, natural disasters).
- Evaluate demographic impacts, such as altering dependency ratios in both source (brain drain/ageing) and host (youthful influx) countries.
- Assess political and health implications, including pressure on host healthcare systems and the rise of nationalist political movements.
Examiner Tips
- 💡When discussing vital rates, always specify that crude birth and death rates are measured per 1000 people per year to ensure mathematical accuracy.
- 💡Use specific contrasting case studies, such as a Stage 2 Sub-Saharan African country and a Stage 5 European country, to illustrate how human and physical settings alter population models.
- 💡Link age-sex composition directly to the Demographic Dividend by explaining how a wide middle section of a population pyramid represents a low dependency ratio.
- 💡Use specific contemporary examples, such as Syrian refugees or economic migrants in the UAE, to illustrate causes and impacts.
- 💡Categorise implications clearly into demographic, economic, social, environmental, health, and political to ensure comprehensive answers.
- 💡Discuss the 'processes' of migration, such as the role of intervening obstacles, border controls, and human trafficking networks.
Common Mistakes
- Error: Confusing natural population change with overall population change. Correction: Explicitly state that natural change only accounts for births and deaths, whereas overall change also includes net migration.
- Error: Assuming the Demographic Dividend is an automatic economic benefit of falling birth rates. Correction: Emphasise that the dividend is only realised if the government invests in human capital and creates sufficient employment for the growing workforce.
- Error: Treating the DTM as a universal rule that applies equally to all countries. Correction: Acknowledge the DTM's Eurocentric limitations and explain how cultural controls or physical settings can cause developing nations to skip stages or stall.
- Confusing refugees with asylum seekers; correction: specify that asylum seekers are awaiting legal confirmation of their refugee status.
- Ignoring environmental causes of migration; correction: include climate change impacts like sea-level rise or drought as key drivers of displacement.
- Focusing only on host country impacts; correction: ensure analysis covers implications for both the origin (e.g., remittances, brain drain) and host nations.