william731 18 / 43 13 Feb 18, 2013 #1The pie chart presents the factors contribute to deterioration in agricultural land. The table demonstrates how the three major causes, namely deforestation, over-cultivation and over-grazing, affected three areas including North America, Europe and Oceania in 1990s. At first glance, Europe was suffered the most (23% of degraded land), compared to North America(5%) and Oceania(13%).From the pie chart, it can be seen that over-grazing(35%) is the major contributor to land degradation. Deforestation and over-cultivation have similar percentages, with 30% and 28% respectively. The rest of the pie belongs to other reasons.Moving to the table, most of affected land in Europe was due to deforestation(9.8%) and cultivation(7.7%). By comparison, These two factors are only attributed to small proportions in Oceania, which had only 1.7% in total. While over- cultivating was responsible for 3.3% out of the 5% of deteriorated land in North America. Over-grazing accounted for the largest percentage in Oceania(11.3%) and that is twice larger than the percentage in Europe.In conclusion, Europe is the region that are facing serious land degradation and most of the causes are deforestation and over-cultivating.