The Pie charts illustrate the proportion of eight homeowners’ garbages in 1990 and 2007 in the USA.
Overall, the paper maintained the most supplier by far in 1990 while it decreased its trash to second place and the kichen rubbish dominated the next decade. Remaing others including metals, textiles, glass declined the usage smoothly compared between 1990 and 2007 while dust and cinders, organic foods, and wood ehnace the utilize of goods.
Four biggest waste in 1990 were paper, organic waste, glass, and plastic, with 35%, 24%, 8%, and 8%, respectively. However, whilst kichen waste command as a fist place increasing its percentage around 40, usage of paper and galss reduced with 16% and 5 % respectively. Furthemore, the plastic protected its proportion the next following decade.
Remaining four waste matters including wood and miscellaneous rise from 4% and 7% to 5% and 17% continiously. However, textiles and metal wasting diminish around 1% for both of them.