| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.SL.TZ2.19 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 19 | Adapted from | N/A |
Question
What describes a possible cause of a negative carbon flux in the atmosphere due to processes occurring in a forest ecosystem?
A. The trees grew more so fixed more carbon dioxide.
B. There was more respiration by soil organisms.
C. There was more burning of forests.
D. There was more decomposition of leaf litter.
Markscheme
A
Examiners report
[N/A]
