0680.3.1.8 — Discuss the benefits and limitations of desalination.: past paper questions
Real questions on 0680.3.1.8 — discuss the benefits and limitations of desalination.
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- 0680/01 · Specimen 2027 · Q2b(iv)[6]
Discuss the benefits and limitations of desalination.
See it on the paper → - 0680/22 · May/June 2026 · Q2f(iii)[2]
(iii) 300 million people around the world rely on desalinated water. Land-based desalination plants need large amounts of energy to remove salt from salt water. Salt water in very high concentrations is a waste product. Suggest two reasons why poorly managed desalination can cause loss of biodiversity in a marine ecosy...
See it on the paper → - 0680/22 · May/June 2026 · Q2f(iv)[2]
Floating desalination plants are an alternative to land-based desalination plants. These floating plants are located on water and are 8m x 5m. They can produce up to 49000 dm of drinking water per day. They are powered by the movement of waves and need 1m high waves to work. Suggest two advantages of floating desalinat...
See it on the paper → - 0680/13 · May/June 2022 · Q8b[3]
Biosphere reserves are similar to extractive reserves. Biosphere reserves have three main zones: the core area, the buffer zone and the transition area. Key core area buffer zone transition area human settlement Explain the functions of the three main zones of a biosphere reserve.
See it on the paper → - 0680/23 · May/June 2020 · Q2f(i)[2]
Estimate the distance between Dakar and mine A and between Dakar and proposed new mine B. distance between Dakar and mine A km
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What examiners said
This question was based on the section of the syllabus: evaluate national and international strategies for conserving the biodiversity and genetic resources of natural ecosystems, further guidance and exemplification; extractive reserves. Those candidates who knew this information answered the question very well, most gaining all of the credit available. It was evident that many candidates did no...
— Examiner report, May/June 2022, 0680/13 Q8(b) (Cambridge)
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