Make use of the "PER" button and choose CO2 emissions per population. It will give you information on how much CO2 in tons of carbon an average person in the respective region used up.
Task 3: Which factor had so far the stronger influence on CO2 emissions, GDP or population of a region?
Press the "KP" button, which stands for the targets of the Kyoto protocol.
Task 4: Write a short answer of 3 sentences: What is the problem for the United States? Why was it easier to agree on the Kyoto protocol for Russia?