The line graph presents the mean carbon dioxide (CO2) released per individual in the included countries (United Kingdom, Sweden, Italy, and Portugal) from 1967 to 2007.
Overall, UK had been released more CO2 than others, whereas Portugal was the lowest country releasing CO2 in the beginning.
In addition, Sweden was just near to UK trend at point after that declined over years and Italy continuously moved upward throughout the period.
In tons, according to data, UK was released CO2 approximately 18 tons in 1967 and steadily decreased, and Sweden in the initial stage experienced dramatically increased just reached to around 14 tons by 1977 year. After it suddenly declined to 6 tones in final year. Both UK and Sweden moved downward.
On the other hand, Portugal accounted for lowest CO2 emissions country. Approximately 1 tone in 1967 and continually rose to 6 tones by 2007.And Italy were also considered as lowest carbon dioxide released country in the beginning just above than 4 and remained upward moved throughout the period.