Band 7+: The pie chart below shows the main reasons why agricultural land becomes less productive. The table shows how these causes affected three regions of the world during the 1990s. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The given pie chart illustrates the proportion of worldwide land degradation causes, while the table shows how these reasons affected three regions throughout the 1990s.

Overall, overgrazing, deforestation, and overcultivation are main causes of worldwide land degradation. Europe had the largest percentage of degraded land than Oceania and North America.

Overgrazing is the biggest reason for worldwide land degradation among other causes; the percentage of degradation is 35 percent. Deforestation made up 30 percent, and overcultivation constituted 28 percent.

Europe illustrated the largest degradation level among three regions, that is 23 percent, and the main reason for degradation was deforestation, which stood at 9.8 percent. Oceania had a less percentage of degradation, about 13 percent, and the key reason was overgrazing, which made up 11.3 percent and there was 0 percent of overcultivation. North America showed the least percentage of worldwide land degradation that was about 5 percent and the biggest reason for degradation in North America was overcultivation, about 3.3.