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

The graph illustrates the number of

carbon

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dioxide

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emissions for each person in four countries including the United Kingdom, Sweden, Italy and Portugal from 1967 to 2007.

Overall

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,

it is clear that

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people who live in the United Kingdom emitted the most

carbon

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dioxide

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,

while

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Sweden had a considerable decrease after 1977. As we can see, in 1967, there were 11

tonnes

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of

carbon

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dioxide

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which were generated by the residents in the United Kingdom, followed by a slight decrease, it accounted for 9

tonnes

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at the end

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of the period.

Moreover

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,

although

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the emissions of

carbon

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dioxide

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in Sweden increased by 3

tonnes

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from 8 to 11 in 1977, it declined sharply to 7 and

finally

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only 5

tonnes

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in 2007.

In addition

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, Portugal had the lowest number at the beginning of the period, which was approximately only 1.8

tonnes

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;

however

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, it started to rise smoothly and reached a peak at 4

tonnes

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in 2007. Italy had the same trend as Portugal, which was 7

tonnes

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in 2007.