The pie graph indicates the factors that made a negative effect on the productivity of agricultural land while the table data illustrates the percentage of land degradation in three main regions in the 1990s

The pie graph indicates the factors that made a negative effect on the productivity of agricultural land while the table data illustrates the percentage of land degradation in three main regions in the 1990s. It is evident from the charts that the biggest cause of this situation was overgrazing. However, degraded land in Europe, which had the highest figure, was mostly affected by deforestation. As can be seen from the pie chart, overgrazing was the major reason that led to more than one third of worldwide land degradation. This single factor accounted for 35%, while deforestation which reached 30% took the second biggest part of the graph. Additionally, another cause, over cultivation, was a bit lower and resulted in 28% loss of land fertility. All remaining minor factors were categorized as ‘other’ and constituted at only 7%. Regarding the table chart, more than one fifth of European land area became less to non productive. While nearly 10% of total land degradation was affected by deforestation, overgrazing accounted for only 5. 5%. In the opposite trend, about 5% of land in North America lost its fertility, and over cultivation was the most popular problem. Nevertheless, the last area, Oceania saw 13% land degraded in total without the effects of overgrazing.