Question 19M.3.HL.TZ2.3b
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.3.HL.TZ2.3b |
| Level | HL | Paper | 3 | Time zone | TZ2 |
| Command term | Compare and contrast | Question number | b | Adapted from | N/A |
The graph shows global CO2 contributions from the use of fuels since 1825. Emissions estimates for the years since 1950 are based on energy data from the United Nations while emissions estimates for years prior to 1950 have been constructed using a variety of sources.
[Source: Boden T ; Marland G ; Andres R J (1999): Global, Regional, and National Fossil-Fuel CO2 Emissions (1751 – 2014)
(V. 2017). Carbon Dioxide Information Analysis Center (CDIAC), Oak Ridge National Laboratory (ORNL),
Oak Ridge, TN (United States). doi:10.3334/CDIAC/00001_V2017]
Referring to the data, compare and contrast the changes in the use of the different fuels between 1950 and 1975.
[2]
[Source: Boden T ; Marland G ; Andres R J (1999): Global, Regional, and National Fossil-Fuel CO2 Emissions (1751 - 2014) (V. 2017). Carbon Dioxide Information Analysis Center (CDIAC), Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). doi:10.3334/ CDIAC/00001_V2017]
Most interpreted the graph correctly, but it was more difficult for some to include similarities, only focusing on differences. A certain number ignored to take only 1950 to 1975 into account, as specified in the question.
