the graph below shows average carbon dioxide(co2) emission per person in the United Kingdom, Sweden,Italy and Portugal between 1967 and 2007

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of

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on

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individual average carbon dioxide (CO2)

emission

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emissions

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in 4 countries from 1967 to 2007.

Overall

, it can be seen that the largest proportion of personal CO2

emission

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emissions

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was in

United

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the United

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Kingdom, followed by Sweden

along with

a downward trend.

In contrast

, Italy and Portugal show an upward tendency during

surveyed

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the surveyed

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period.

It is clear that

the most contribution of average CO2

emission

was

Bristish

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Britain

which stood at approximately 11

tonnes

per person at the beginning and decreased slowly to about 9

tonnes

at the end

but still was the most popular country among all countries. In comparison, Sweden

was

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apply

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the

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apply

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start

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started

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at 9

tonnes

individual

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of individual

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CO2

emission

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emissions

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in 1967 and peaked at around 11

tonnes

in 1977

while

the figures

was fall

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fell

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sharply to below 6

tonnes

in 2007. On the

othe

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other

hand,

Italy

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Italy's

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and

Portugal

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Portugal's

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CO2

emission

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emissions

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had a similar upward trend,

started

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at about 4

tonnes

and 1 tonne and both rose gradually to 8

tonnes

and 5

tonnes

, respectively.