The pie chart illustrates the different types of household waste collected in one city in 2020, while the bar chart compares the percentages of waste recycled in 2000 and 2020.
Overall, food waste accounted for the largest proportion of household waste, whereas metals made up the smallest proportion. Regarding recycling, glass had the highest rate in both 2000 and 2020, while all five categories increased over the period.
Looking at the pie chart, food waste accounted for the largest proportion of household waste, at 32%, which was considerably higher than the figure for paper and cardboard, at 24%. Plastic waste followed, making up 16% of the total. Meanwhile, other types of waste and glass stood at relatively similar proportions, at 12% and 10% respectively. By contrast, metals accounted for only 6%, which was the lowest proportion of all categories.
Turning to the bar chart, the recycling rate of glass increased significantly from 50% in 2000 to 75% in 2020. Similarly, the figure for paper and cardboard rose from 45% to 70%, while metals increased from 35% to 60%. In 2000, the recycling rate of plastics was twice as high as food waste, at 10% and 5% respectively. However, the figure for food waste rose sharply to 40% in 2020, which was considerably higher than plastic, at 25%.