the provided bar chart compares the proportion of four different kind of household garbage material name ; glass, paper, cans and plastic in a city over a decade
Overall,it is clear the highest ratio of rubbish was reuse by glass in a city, while plastic was the lowest over the given time
in term of trash recycle, the percentage of waste used from glass in a urban area increase significantly from nearly 30% to 50% be to a 1992 and 2002. further more, the figure paper show dan upward trend. in 1992 it was over 10% then it rose dramatically by closely 30% in the year 2002
for the remaining recycle, there was a rapid to grow in the material Cans between below 10% to 20% in the year 1992 and 2002. moreover the figure plastic increased slowly by about 2% in 1992. then it was stable at approximately 12% between 1997 and 2002.