The graph below shows average carbon dioxide (Co2) emissions per person in the United Kingdom, Sweden, Italy and Portugal between 1967 and 2007.

The line graph provides information about how much households in 4 countries including the UK, Sweden, Italy and Portugal emit carbon dioxide in environments over a

period

of 40 years from 19967 to 2007.

Overall

,

it is clear that

the amount of CO2 in Portugal and Italy had an upward trend,

while

In the UK and Sweden had downward trends of 40 years in the

period

shown.

To begin

, stood at 1967, the number of CO2 emissions in Portugal had a dramatic increase to around 1.5 metric

tonnes

,

then

there was slowly went up between 1997 and 2007.

Similarly

, In Italy, from 1967 to 2007, there witnessed a sharp rise at around 4.5 to around 7.8 metric

tonnes

,

then

it levelled off until the end of the

period

years. Turning to a downward trend, the country which had the highest CO2 emissions is the UK, standing at 10.5 metric

tonnes

,

then

there was a substantial decline continually at around 8.3 metric

tonnes

which is the highest rate in 2007 more than others. In comparison,

although

the number of CO2 emissions in Sweden had a significant decrease at 5.8 metric

tonnes

in 2007, it had a smaller rate than Italy

at the end

of the

period

.