Errors:  

- The list of countries should be separated by commas.

Corrected version:

In the graph, the average carbon dioxide (CO2) emissions per person in the United Kingdom, Sweden, Italy, and Portugal are shown over a period from 1967 to 2007.

Improved version:

The graph illustrates the per-person average carbon dioxide (CO2) emissions in the United Kingdom, Sweden, Italy, and Portugal from 1967 to 2007.

Errors:  

- Incorrect verb form; it should be "fell."

- The phrase "at approximately" should be followed by a specific value.

- The phrase "at around" should also be followed by a specific value.

Corrected version:

In 1967, the UK's emissions fell to approximately 11 metric tonnes per person, reaching around 8.

Improved version:

In 1967, the per-person emissions in the UK declined to approximately 11 metric tonnes, stabilizing around 8.

Errors:  

- Missing article before "Italy."

- Incorrect use of "90's"; it should be "1990s."

- The phrase "towards the end of period" is unclear; it should specify the time frame.

Corrected version:

Italy's emissions peaked at just above 6 metric tonnes in the late 1990s before gradually declining towards the end of the period.

Improved version:

Italy experienced a peak in emissions, surpassing 6 metric tonnes in the late 1990s, followed by a gradual decline towards the period's end.

Errors:  

- Incorrect verb form; it should be "improved" or "increased."

- Unclear phrase "throught with emission levels they 7 tonnes"; it lacks proper structure.

- The phrase "between the year 1967-2007 surged continuous" is unclear and lacks proper grammar.

- The term "down fall" should be "downfall."

Corrected version:

Portugal improved its emission levels, reaching 7 tonnes of CO2 per person in 2007. Between 1967 and 2007, emissions surged consistently with minimal decline.

Improved version:

Portugal demonstrated remarkable improvement, achieving 7 tonnes of CO2 emissions per person in 2007. Over the period from 1967 to 2007, emissions consistently surged with minimal fluctuations.

Errors:  

- Unclear phrase "went up and down wildly"; it lacks specificity.

- The phrase "had lower emissions at about 4 and less than 2 metric tonnes" needs restructuring.

Corrected version:

Both countries experienced fluctuating emissions, with levels ranging from approximately 4 to less than 2 metric tonnes.

Improved version:

Both nations witnessed volatile emission patterns, varying between approximately 4 and less than 2 metric tonnes.

Errors:  

-  Incorrect article; it should be "Sweden."

- Unclear phrase "short-lived down"; it lacks specificity.

- Incorrect verb form; it should be "cannot recover."

- The terms "up (upward)" and "down fall (downward)" are redundant and need rephrasing.

Corrected version:

Sweden experienced a brief decline but could not fully recover the metric tonnes. Emissions increased in 1977 and decreased in 2007.

Improved version:

Sweden briefly declined but failed to fully recover emissions. Notably, there was an upward trend in 1977 followed by a downturn in 2007.