The graph below shows average carbon dioxide emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007

To sum up, studying another language mostly is driven by the certain motivation, such as for jobs or vacations, while people would not take a foreing language as their major if the language skill is not required when they have to travel abroad. The given graph illustrates the means of carbon dioxide (CO2) emissions in the four distinguished countries, which are the United Kingdom, Sweden, Italy and Portugal, and it is accounted for per person in metric tonnes in 1967 to 2007. Overall, the emmisions of carbon dioxide in the UK and Sweden declined while the the graphs of Italy and Portugal fell. In first period, the amount of CO2 emissions in the UK and Sweden depicted the highest number that accounts for about 11 and above eight metric tonnes respectively, while Italy experienced roughly over four metric tonnes, and Portugal was the lowest poin in this period that represented not almost two metric tonnes. The year after, those three countries shown their growth significantly except the UK that declined slightly no more than one metric tonnes. The UK and Sweden performed dropping number number extremely in 1987 until about five metric tonnes for Sweden, and slightly below 10 metric tonnes for the UK. On the contrary, Italy and Portugal had continued their growth until 1997, Italy reached its highest number that contributed almost eight metric tonnes. In the same year, the UK and Sweden fell significantly, and finally peaked their lowest level into about 8. 5 metric tonnes and below six metric tonnes respectively in the last periods, while Portugal remained its growth into over five level.