The pie chart presents several major factors that result to a less productive agricultural land while the table displays the how the 3 major regions contribute these worldwide causes within the 1990s.

Overall, over-grazing as one of the main causes why agricultural field is unable to yield good results occupied the largest percentage while other factors aside from deforestation and over-cultivation had the least percentage. Among the 3 regions, Europe has the highest total percentage of land degraded which consists deforestation, over-cultivation, and over-grazing, while North America has the lowest total percentage.

Globally, over-grazing contributes the highest percentage from three regions, namely; North America, Europe and Oceania. In terms of this cause, Oceania shares the largest percentage that makes most of 35%. Second and third are deforestation and over-cultivation. Based on the three said regions, Europe has the biggest contributions that cover most of the 30% for the former and 28% for the latter. However, there are still other factors aside from these three worldwide causes of land degradation.