The chart gives information about the amount of carbon dioxide released into the atmosphere by different income groups in 1990 and 2000, while the pie chart illustrates the percentage of the world’s population represented by each income group in 2000.
Overall, Middle income group recorded the highest figures in both year, with the exception of low income group, which a reversal pattern can be observed. High income group formed the leading period, while the other categories recorded lowest figures.
Turning to the highest figure, Middle income group saw the most dramatic increase in carbon dioxide, rising from 15 metric tonnes in 1990 to 22 metric tonnes in 2000. In contrast, the high-income group experienced slight decline from 13 metric tonnes to 12 metric tonnes over the year. Meanwhile, low income group registering 1 metric tonnes in 1990 and doubling slightly to 2 metric tonnes by 2000.
Turning to the pie chart, the world’s population in 2000 was distributed among the three income group. The highest income group accounted 48.1% world’s population, while the middle income group showed just over 34%. The low income group formed the smallest proportion at 18%.
