Band 4+: the pie chart shows the main reasons why agricultural land become less productivity. the table shows how these causes affect three regions of the world during the 1990. summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The pie chat compares the percentages of the main factors why agricultural land becomes unproductive and the table compares the percentage of how these causes affected three different regions of the world over the period of 1990s.

Overall,over-grazing was the most significant cause of land degradation in 1990s,while the percentages of land degraded by North America was lowest in the given year.

According to the pie chart, four causes are worldwide land degradation, the highest percentage of over-grazing and deforestation was at 36% and 30% respectively.However, over-cultivation was at 28% respectively. But the lowest percentage of others in the given year.

Regarding the table,23% was the total higher land degraded in Europe in 1990s,but there are deforestation,over-cultivation and over- grazing was at 9.8%,at 7.7% & at 5.5% respectively. After that Oceania was at 1.7%,at 0%, at 11.3% and the total 13% respectively.At 0.2%,at 3.3%,at 1.5% were had total 5% land degraded was lowest in North America in the over the period.