Band 6+: The graph below shows the CO2 emissions of five regions from 2000 to 2020, and predictions up to the year 2040.Provide an overview of the information by identifying and describing the key details, and include comparisons where appropriate.

The line graph illustrates the amount of carbon footprint in 5 regions between 2000 and 2020, and expectations towards 2040.

Overall, while region 3 to region 5 witnessed upward trends, the CO2 emissions in region 2 flatter until 2040. Additionally, despite experiencing a downturn, region 1 always emits the highest quantity of carbon footprint throughout the period.

In terms of region 3 and region 4, the former began at around 4 million and subsequently bottomed at almost 3 millions of metric tonnes in the next 5 years. After that, it grew gradually and leveled off at approximately 5 million in 2020. From 2020 onwards, it is predicted to reach its peak at 6 million metric tonnes. For region 4, it started the period at around 3 million, after which it had increased steadily to almost 4 million by 2020 before being anticipated to rise to 5 million at the end of the period.

Regarding other regions, region 1 fluctuated between over nine million and around 7.5 million in the first half of the period. In the next 20 years, CO2 emissions in this region are estimated to drop to 7 million metric tonnes. Besides, the figure for region 5 saw some fluctuations between 1 million and 2 million in the first 20 years and is likely to fluctuate before ending the period at just over 1 million. Similarly, that of region 2 experienced the same trend, fluctuating between just over and under six million, but it is projected to end the period at the same amount of its starts.