he Graph shows average carbon dioxide (CO2) emissions per person in the United Kindom, Sweden, Italy and Portugal between 1967 and 2007.

The graph demonstrates the amount of Carbon dioxide per person, which is emitted by four different countries from 1967 to 2007. Overall, it is clear that the United Kingdom produces the highest amount of CO2 during each year of study. Conversely, Portugal was the lowest contributor of CO2 throughout the whole period. Focusing, on the UK and Sweden, the emission of CO2 distributed roughly 11 and metric tonnes, respectively in 1967. Ten years later, UK’s CO2 release started to plummet gradually and reached around 9 metric tonnes in 2007. In contrast, the emission of CO2 from Swede soared to over 10 metric tonnes in 1977, before dropping to 7 metric tonnes and then slipping to approximately 5 metric tonnes. As for the Italy and Portugal, the former rose from around 4 metric tonnes of CO2 in 1967 to about 8 metric tonnes of CO2 in 1967 to about metric tonnes in 1977 and witnessed a plateau until the period’s end. The latter’s emission of CO2 started at roughly 1 metric tonnes and reached around 5 metric in 2007.