The line graph illustrates average 
carbon
 Use synonyms
dioxide
 Use synonyms
emissions
 per Use synonyms
person
 in four different countries (the United Use synonyms
Kingdom
, Sweden, Italy, and Portugal), which were emitted over 40 years from 1967-2007. Units are measured in metric Use synonyms
tonnes
.
Use synonyms
Overall
, the Linking Words
carbon
 Use synonyms
dioxide
 Use synonyms
emissions
 of the United Use synonyms
Kingdom
 and Sweden per Use synonyms
person
 decreased over the period given, Use synonyms
while
 for Italy and Portugal, they rose. In the timeline given, the United Linking Words
Kingdom
 had the highest Use synonyms
carbon
 Use synonyms
dioxide
 Use synonyms
emissions
 per Use synonyms
person
.
With regard to the amount of CO2 Use synonyms
emissions
 in the United Use synonyms
Kingdom
, it started at around 11 metric Use synonyms
tonnes
 in 1967, after which it dropped to approximately 8 Use synonyms
tonnes
 Use synonyms
at the end
 of the period. Linking Words
Likewise
, Linking Words
in 
Sweden, its CO2 Change preposition
apply
emissions
 began at nearly 8.8 Use synonyms
tonnes
 and Use synonyms
then
 peaked at 10.3 Linking Words
tonnes
 in 1977 before falling dramatically to about 5 Use synonyms
tonnes
 in 2007.
Use synonyms
On the other hand
, the Linking Words
carbon
 Use synonyms
dioxide
 Use synonyms
emissions
 per Use synonyms
person
 in Italy started at 4.2 metric Use synonyms
tonnes
 in the first year and it Use synonyms
then
 rose to 7.8 Linking Words
tonnes
 in 1997 and remained unchanged in the next ten years. Portugal Use synonyms
also
 increased steadily from around 1.2 Linking Words
tonnes
 to 5.6 Use synonyms
tonnes
 between 1967 to 2007.Use synonyms