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

dioxide

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

Overall

,

it is clear that

people who live in the United Kingdom emitted the most

carbon

dioxide

,

while

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

tonnes

of

carbon

dioxide

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

tonnes

at the end

of the period.

Moreover

,

although

the emissions of

carbon

dioxide

in Sweden increased by 3

tonnes

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

finally

only 5

tonnes

in 2007.

In addition

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

tonnes

;

however

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

tonnes

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

tonnes

in 2007.