Climate Change: Strategies & Solutions
Papers 3 & 4 · 15 Questions · 34 Total Marks · Syllabus 0620 (2026–2028)
Section A: Targeting CO₂
State and explain one strategy involving plants to reduce climate change.
💡 Think about what plants do with CO₂ during daylight hours.
Your answer:
State two energy-related strategies to reduce CO₂ emissions.
💡 Think about what produces CO₂ and what doesn't.
Your answer:
Explain how carbon capture and storage (CCS) can reduce the impact of climate change.
💡 Where does CO₂ go, and why does that help?
Your answer:
State two ways individuals can reduce their personal carbon footprint to decrease CO₂ emissions.
💡 Daily habits and choices matter at the individual level.
Your answer:
Evaluate the effectiveness of planting trees as a strategy to reduce climate change. Include a limitation.
💡 This is a 'balanced argument' question — give a strength AND a weakness.
Your answer:
Section B: Targeting Methane
State one strategy to reduce methane (CH₄) emissions from agriculture.
💡 The biggest agricultural source of methane is livestock.
Your answer:
Explain why reducing the number of cattle can help reduce the rate of climate change.
💡 Trace the path: cattle → methane → atmosphere → warming.
Your answer:
State two sources of methane emissions other than livestock farming.
💡 Think about decomposing organic matter and fossil fuel industries.
Your answer:
Explain how capturing methane from landfill sites can have a double environmental benefit.
💡 Think about what happens to the methane once captured.
Your answer:
State two ways in which reducing methane emissions differs from strategies that target CO₂ emissions.
💡 Consider the sources and the strategies available for each gas.
Your answer:
Section C: Alternative Fuels
Explain why increasing the use of hydrogen as a fuel reduces global warming.
💡 Write the combustion equation in your head: H₂ + O₂ → ?
Your answer:
Evaluate the use of hydrogen as a fuel to replace petrol in cars. Include one advantage and one disadvantage.
💡 Think practically: production, storage, infrastructure.
Your answer:
Explain why biofuels are described as 'carbon neutral' and state one limitation of this claim.
💡 Trace the carbon cycle: plant grows → plant burned → CO₂ returns to atmosphere.
Your answer:
State two renewable energy sources that could replace fossil fuels and explain how each reduces CO₂ emissions.
💡 Name the source AND link it to avoiding combustion of fossil fuels.
Your answer:
A government is choosing between three strategies to reduce climate change: (i) planting more trees, (ii) switching to hydrogen fuel, (iii) reducing livestock farming. Evaluate which single strategy would be most effective and justify your answer.
💡 This is an extended response — compare all three and make a justified recommendation.
Your answer:
📊 Exam Summary
🎯 Strategy for Full Marks:
• State questions: Give precise facts. Name specific processes (photosynthesis, not 'absorb').
• Explain questions: Use the word 'because' — link cause to effect.
• Evaluate questions: Always include BOTH sides + a justified conclusion.
• Chemical accuracy: H₂ + O₂ → H₂O for hydrogen combustion. No CO₂ = key point.
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