| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.SL.TZ1.19 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 19 | Adapted from | N/A |
Question
In addition to carbon dioxide, which of these greenhouse gases is the most significant?
A. Methane
B. Ozone
C. Nitrogen oxides
D. Water vapour
Markscheme
D
Examiners report
[N/A]
