The provided bar chart delineates the volume of waste, mesured in million tonnes, which was treated by three main methods in a developed nation between 2005 and 2008.
Overall, while landfill and dumping in sea both experienced a downward trend across the four-year period, burning recorded a more fluctuating pattern. Notably, landfill disposal was the most commonly used method at the start of the period.
Starting the two declining groups, landfill waste registered 70 million tonnes, substancially exceeding that of sea dumping (55 million) in 2005. Over the subsequent period, landfill disposal followed a descending trend, declining 10 million annually, ultimately reaching 40 million in 2008. Similarly, the volume of waste burn also witnessed a steady fall, which plateaued at 50 million in both 2006 and 2007, before a minor retreat to 40 million in 2008, equaling the number for landfill.
Regarding burning, this method started of close to landfill at 65 millon tonnes in 2005, before declining steadily to 40 millon in 2007, its lowest point. However, burning then recovered to its original position of 65 million tonnes in 2008, the highest recorded figure that year.
