The given column graph illustrates three methods of disposal of waste materials in 2005, 2006 and 2008. It is clear that the landfill method was the most used for waste disposal in 2005 and dumping in sea was used the maximum in 2008.
It is clear that about 2000 million tonnes of waste was disposed by landfill method in 2005. Disposal of waste by this method lost popularity gradually and by 2008, only 1200 million tonnes was disposed off by this method. About 900 million tonnes of waste was burnt and about 1200 million tonnes was dumped in sea.
In 2006, again the most popular method of waste disposal was landfill, but the amount disposed was lesser than that in 2005. Just under 1200 million tonnes was disposed off by burning and a little over 1400 million tonnes was dumped in sea.
In 2008, the most popular method was dumping in sea and over 1600 million tonnes was disposed off like this. A little under 900 million tonnes was burnt.
Overall it can be seen that dumping in landfill sites lost popularity and dumping in sea gained popularity in the given time. The burning method of waste disposal fluctuated over the period