The pie chart below shows the main reasons why agricultural land becomes less productive and the table shows how these causes affected three regions of the world during the 1990s.

The pie chart illustrates the data of the worldwide land degradation and the table gives the three causes of the decline the agricultural production by three selected nations in the year 1990 Overall, it can be seen from the major proportion of land degradation by over-grazing and deforestation in both charts, also in table, Europe was the highest percentage of the fall of production on land. In the pie chart, the reason behind the land degradation had accounted 65% by over-grazing and deforestation. Moreover, by the over-cultivation had 28% affected and rest of the 7% affected by other. From the table, the north America was minimal proportion accounted by three majors while total land degradation was only 5%. In the Europe, the three causes were accounted under the 10% however, the Oceania was 11. 3% affected by over-grazing as well as by deforestation was 1. 7%. Meanwhile, the Oceania was no impacted by the over-cultivation which registered 0%. Furthermore, the total land degradation by Europe had 23% as compare to Oceania had almost half proportion.