Environmental issues and management
Compare energy systems and transitions, explain rural and urban environmental degradation, and judge management and planning choices.
Exam scope and assessment notes
Cambridge International AS & A Level Geography 9696, 2027–2029 syllabus, Topic 12. Across every topic, practise reading both quantitative and qualitative geographical resources, describing patterns before explaining them, evaluating evidence and producing a structured, supported conclusion. These original explanations and self-checks are independent study support, not Cambridge questions, official marks or grades. Centre-selected named examples and detailed case studies still need course-specific evidence packs. Full timed mock papers, official marking or grade prediction, and human subject-teacher review are not provided. Fieldwork is not assessed in this syllabus, but this site does not collect or supervise primary data.
Before you begin
- Cambridge recommends prior Geography at approximately Cambridge IGCSE or Cambridge O Level. Read the source and its scale before explaining patterns; support evaluation with relevant evidence.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
Name one constraint on expanding wind or solar generation.
What you will learn
- Compare renewable, fossil and nuclear energy and the constraints on transition
- Explain national energy balance and security
- Analyse rural extraction, agriculture, infrastructure and urban pollution
- Evaluate restoration, sustainable practice, planning and controls
Energy choices depend on systems and place
Electricity can come from wind, solar, tidal, hydroelectric, geothermal, biomass, fossil fuels or nuclear power; households may also use wood, charcoal or animal dung. Production and consumption vary with resource endowment, climate, income, economic structure, investment, grid access and policy.
A transition has environmental, social, economic and political constraints. Intermittency, storage, grid connectivity, scale, efficiency, manufacturing decarbonisation and energy security matter. Compare a source across lifecycle impacts, affordability, reliability, access and who bears the risks; no source is impact-free.
Rural and urban degradation have different drivers
Mining, quarrying, agricultural practices and large infrastructure can pollute or degrade rural land, air and water. Restoration, monitoring, legislation, soil conservation, resource efficiency and biodiversity protection can reduce harm, but enforcement and livelihood alternatives affect results.
Dense building, transport, industry, power, construction, domestic activity, solid waste and sewage contribute to urban pollution and degradation. Causes and capacity to respond differ among lower-, middle- and higher-income settings. Sustainable construction, energy conservation, on-site generation, cleaner transport, waste systems and planning controls can improve outcomes if access and maintenance are addressed.
Management should be evaluated against a named place
A rural-area example should identify causes, affected groups, management attempts and evidence of restoration. An urban example should trace pollution sources, planning or control responses and environmental change. A national energy comparison should explain why sources were chosen and whether strategies improve energy security.
Use monitoring, before/after data, compliance and affected-group evidence. The centre-selected rural, urban and country examples are not supplied as verified case packs here, so students must add their course's named examples and current evidence.
Sources for this lesson
Pause and explain
Why might a rural restoration project need livelihood evidence as well as vegetation data?
Worked example
A country raises its renewable-electricity share from 20% to 35% while total electricity demand grows by 50%. Explain why the renewable share alone cannot show whether fossil-fuel generation fell.
Show the worked solution
- The share can rise while total demand also rises, so compare absolute generation rather than percentages alone.
- If total generation grows by 50%, the absolute renewable amount rises, but fossil generation may also rise or fall depending on the remaining mix.
- Use consistent units and years and include imports, storage and non-electric household fuels if the question concerns total energy security.
Answer A higher renewable share does not prove an absolute fossil-fuel reduction. Compare generation volumes and system boundaries across the same years.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
A national energy table shows coal at 40%, gas 25%, hydro 20%, wind and solar 10%, and nuclear 5%. Calculate the non-fossil share and identify one limitation of using only this table to judge energy security.
Give me a hint
Add the listed non-fossil shares; then consider reliability, access and imports.
Compare my reasoning
- Non-fossil share = 20% + 10% + 5% = 35%.
- The table gives proportions but not total demand or generation volume.
- It also omits reliability, grid access, fuel imports, household fuels and seasonal variation.
The listed non-fossil share is 35%. Security also depends on volumes, reliability, infrastructure, affordability and external supply.
Look for these in your work
- Shares added correctly
- Units kept as percentage
- Limitation linked to security
A mine restores land after extraction but leaves polluted water and few replacement jobs. Assess whether the restoration can be called successful.
Give me a hint
Judge environmental recovery and social outcomes separately and use a suitable time horizon.
Compare my reasoning
- Revegetation may improve soil cover, but water quality remains an unresolved environmental impact.
- Employment and livelihoods matter; a restored surface does not by itself replace income or community access.
- Use water tests, biodiversity measures, compliance records and employment evidence over time.
The evidence is mixed and does not support an unqualified success claim. Water quality and livelihood recovery need further evaluation.
Look for these in your work
- Multiple dimensions used
- Evidence matched to outcomes
- Balanced judgement
A city compares low-emission buses, stricter construction standards and expanded sewage treatment. Recommend a monitoring plan that can reveal who benefits and whether pollution falls.
Give me a hint
Match indicators to each intervention and disaggregate exposure and access.
Compare my reasoning
- Track bus use, traffic emissions and access by neighbourhood and income group.
- Measure construction dust and energy use before and after standards, and check compliance.
- Monitor sewage treatment coverage and downstream water quality, while recording costs and service reliability.
A useful plan combines pollutant measures, service access, compliance and neighbourhood-level data over time against a baseline.
Look for these in your work
- Each action has an indicator
- Distribution considered
- Baseline and follow-up specified
Common mistakes
- Calling every renewable source sustainable in every location
- Comparing energy shares while ignoring total demand
- Treating energy access and national supply as the same measure
- Assuming urban pollution has the same causes in all income settings
- Calling restoration successful without evidence of environmental and social outcomes
What can you explain now?
Why should energy-source shares be read alongside total generation?
Compare with the explanation
A rising share can coexist with rising absolute production from other sources
Percentages and absolute quantities answer different questions.
After trying it yourself, choose your next review. This is your self-assessment.
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Make it stick
Compare one energy transition and one pollution-management strategy by effects, access, implementation and evidence.
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.