O-LevelBiologyEcology & Environment5090/11 · Oct/Nov 2014 · Q301 Mark
The diagram shows some of the stages in the nitrogen cycle. What is process X?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Adecomposition
Bnitrification
Cnitrogen fixation
Dphotosynthesis
✓ Correct answer
C: nitrogen fixation
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 →