The pie chart compares the agriculture land becomes less productive by deforestation, over-cultivation, over-grazing and other reason. The table illustrates North America, Europe, and Oceania region were impacted by 4 causes of land degradation in the 1990s.
From the pie chart, it is clean that over-grazing made up 35% and became the most cause of worldwide land degradation. Meanwhile, the deforestation cause and over-cultivation cause accounted for 30% and 28%, respectively. And the lowest proportion, 7%, belonged to other cause.
As can be seen from the second table chart, Europe was the most affected country with 23% of its land degraded. the second influenced country with the most especially serious over- cultivation (11,3%), which is Oceania. Finally, with only total 5% land degraded, which included mainly 3,3% land degraded by over-cultivation is North America.