▶ Your Answer : The pie graph illustrates the proportion of four factors, including others, of land degradation all around world as well as the table graph compares three areas that were degraded by those reasons over the 1990s. Overall, it is apparently seen that the most biggest reason of reducing agricultural land production is the over-grazing in the world. In addition, totally Europe was the region which was degraded more that other regions, compared with the least degradation of North America. As shown by the two charts, regarding over-grazing with 35% of degrade reasons, Oceania had the highest reason from that at 11.3%, while there were nearly half percent at 5.5% and 1.5% in Euripe and North America respectively. The following cause is deforestation with 30%, which is only 2% more than the figure for over-cultivation. In terms of the remaining categories, in Europe, the largest cause was deforestation with 9.8%, but both the rest of regions were not affected by that under 2%, accounting for 0.2% and 1.7% in North America and Oceania each. Furthermore, over-cultivation was the biggest issue of land degradation in North America at 3.3%, whereas agricultural land in Oceania had never been degraded by that. |