The graph illustrates how much carbon dioxide was released by each people in four different nations from 2010 to 2020.
Overall, the was an increase in the amount of emissions in country A and country C, contrastly, a decrease trend can be seen in the figure for country B and country D. Moreover, the amount of carbon dioxide was released in country D was lowest throughout the period.
The volume of emissions was released per person in country A started at just under 6 metric tons in 2010, after that, it rose considerably to downward of 8 metric tons in 2018 before increased slowly to upward 8 metric tons in 2020. Meanwhile, the figure for country C went up moderately from aroun 3,8 metric tons in 2010 to reach a peak at exactly 5 metric tons in 2018, and decreased slowly to about 5,8 metric tons in 2020 consequently.
The similar trend can be seen in the figure for country B, which rose from approximately 6,6 metric tons in 2010 to reach a peak at 7 metric tons in 2011, after that it falled significantly to just above 5 metric tons in 2020. Next, just under 3 metric tons of emission were released by people in country D, followed by a steady increase to about 3,5 metric tons in 2013, and it declined slowly to 3 metric tons in 2020.