| Date | May 2015 | Marks available | 1 | Reference code | 15M.1.SL.TZ2.20 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Analyse | Question number | 20 | Adapted from | N/A |
Question
The table shows the monthly CO2 concentrations in mg L–1 taken at two monitoring stations.
What is directly indicated by the data?
A. CO2 concentration in the atmosphere varies from place to place.
B. Cape Grim is less affected by global warming than Mauna Loa.
C. CO2 creates a greenhouse effect at both locations.
D. The standard deviation for Cape Grim is higher than standard deviation for Mauna Loa.
Markscheme
A
Examiners report
This question had too much data to analyse for a multiple-choice question. Capable candidates however were able to answer this question well.
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