the pie chart below shows the main reason why agricultural land becomes less productive. the table shows how these causes affected three regions of the world during the 1990s.
The pie chart shows information about the main factors that causes where agricultural land experience decreasing of function which occur in three continents of the world during 1999s. The table gives overview about the number of degradation land based on the area (North America, Europe and near Australia). Overall, the highest causes of grand degradation came from over-grazing in farming activity. The greatest degradation occure in Europe.
Based on the pie chart, the percentage of over-grazing was accounted 35%, and it was dominated among other causes. The second highest came from increasing forest function and illegal logging, at 30%. The least number came from other reasons.
The table illustrate that Europe was as main contributor in degradation, at 23% which it gave 9,8 of deforestation and 7,7 over cultivation. However, Europe is the highest percentage totally, but other islands including Australia and New Zealand gave the largest number of over-grazing and they were not experienced in over-cultivation.
In conclusion, the worldwide land degradation most caused by over-grazing and the friendlier land is North America.