| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.SL.TZ2.25 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 25 | Adapted from | N/A |
Question
The use of which energy source enhances the greenhouse effect the most?
A. Wood
B. Coal
C. Wind
D. Tidal
Markscheme
B
Examiners report
Teachers wished to debate the answer to this question, but the candidates had no problem with it. In paper 1 candidates are required to give the best answer, which here is clearly B.
Syllabus sections
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