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EnglandGeographyQuick questions
Component 1: Physical Systems - Earth's Life Support Systems
Quick questions on Managing the carbon cycle and climate: consequences, mitigation and adaptation - OCR A-Level Geography
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is consequences of changes to the carbon cycle?Show answer
A larger atmospheric carbon store has wide consequences. The atmosphere warms, shifting temperature and precipitation patterns and intensifying some extremes. The oceans warm and expand (raising sea level), and dissolved carbon dioxide forms carbonic acid, lowering pH (ocean acidification) and stressing calcifying organisms. Ecosystems shift: species ranges move, the cryosphere retreats, and stressed sinks such as drought-hit forests can switch to sources.
What are mitigation strategies?Show answer
Mitigation reduces the flux of carbon to the atmosphere or enhances its removal, tackling the cause. Key routes are decarbonising energy (renewables, nuclear, efficiency), carbon capture and storage (capturing emissions and returning carbon to geological storage), and protecting and enhancing natural sinks (halting deforestation, afforestation, peatland and wetland restoration, and blue carbon in mangroves and seagrass). Carbon pricing (taxes or trading) aims to internalise the cost. Mitigation operates at every scale, from the Paris Agreement and carbon markets internationally, through national renewable targets and regulation, to local tree-planting and behaviour change, but it requires broad cooperation and acts on a delay.
What is q1?Show answer
State two consequences of rising atmospheric carbon dioxide for the oceans. [2 marks]
What is q2?Show answer
Explain why early mitigation is more effective than delayed mitigation. [4 marks]
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