O-LevelBiologyEcology & Environment5090/12 · Oct/Nov 2021 · Q291 Mark
Why is it important that carbon is cycled in nature?
ACarbon compounds needed by living organisms are produced in respiration.
BCarbon dioxide is needed by animals for respiration.
CLiving organisms need carbon compounds to make new proteins.
DTrees take in less carbon dioxide for photosynthesis than they produce in respiration.
✓ Correct answer
C: Living organisms need carbon compounds to make new proteins.
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 →