Skip to main content
O-LevelBiologyEcology & Environment5090/12 · Oct/Nov 2022 · Q311 Mark

In the carbon cycle, what is one way that carbon can enter the atmosphere?

Aburning
Bfeeding
Cfossilisation
Dphotosynthesis

✓ Correct answer

A: burning

Practise more questions on this topic

Oracle Prep sorts past-paper questions by topic, so you can drill Ecology & Environment and see which topics are most likely to come up next.

Sign up free →

About this question

Topic
Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, Oct/Nov 2022 Paper 1 Variant 2, question 31.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

Related Biology questions

© 2026 Oracle Prep