Carbon cycle: past paper questions
Real questions on carbon cycle
The newest 7 of 7 written questions. Open one to see it on the real paper.
- 0654/41 · October/November 2025 · Q3b(i)[2]
Explain how deforestation can increase the concentration of carbon dioxide in the atmosphere.
See it on the paper → - 0654/21 · October/November 2024 · Q13[1]
Which processes change the amount of carbon dioxide in the air?
See it on the paper → - 0654/11 · May/June 2024 · Q13[1]
Which process removes carbon dioxide from the atmosphere?
See it on the paper → - 0654/22 · May/June 2022 · Q13[1]
Which statement explains the change in oxygen over time?
See it on the paper → - 0654/11 · May/June 2021 · Q13[1]
What does not contribute to the carbon cycle?
See it on the paper → - 0654/11 · October/November 2020 · Q25[1]
Which process does not produce carbon dioxide?
See it on the paper → - 0654/21 · October/November 2019 · Q13[1]
What is the correct order of these stages in eutrophication?
See it on the paper →
What examiners said
This question on eutrophication was well answered, although a significant proportion of candidates believed that the change in oxygen concentration was caused by the algae using it for respiration, rather than it being used by the decomposer bacteria.
— Examiner report, May/June 2022, 0654/22 Q13 (Cambridge)
Answers here were fairly evenly split between the correct answer, and two others, suggesting that a number of candidates were guessing. The question involved putting the stages of eutrophication in order, which could have been challenging.
— Examiner report, October/November 2019, 0654/21 Q13 (Cambridge)
Past papers, syllabus and examiner reports © UCLES (Cambridge University Press & Assessment). Questions are matched to topics from the official syllabus. AssessPro is independent and not endorsed by Cambridge.