Many climate scientists believe that emissions of greenhouse gases, particularly carbon dioxide (CO2\text{CO}_2CO2), from human activities contribute significantly to global warming.
The graph below shows the relative carbon dioxide (CO2\text{CO}_2CO2) emissions from road transport in Germany and the global average surface temperature change between 1995 and 2015.

Evaluate the information shown in the graph. To what extent does the graph support a link between human activity (specifically vehicle emissions) and global warming?
There are problems with using information about carbon dioxide emissions from road transport in Germany to draw conclusions about global temperature changes. Suggest what these problems are.
Describe one consequence of global climate change on weather patterns or ecosystems, other than rising sea levels and global average temperature increases.
Suggest one method by which society can lower carbon dioxide emissions from transportation.