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. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The pie

chart

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provides the contributions of each five reasons why farmland became less efficient, with a table that reveals the statistics of how North America, Europe and Oceania had been impacted by these causes during the 20th century. From the pie

chart

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, over-grazing was the main cause of worldwide region degradation.

Furthermore

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, Europe was the leading continent in total area degradation. Looking at the pie

chart

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, there are three main reasons that had led to farmland degraded, each cause contributed to just under or above one-third of the

chart

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. Overgrazing has the largest contribution of 35%, followed by desertification which was under one-third and over-cultivation at 28%. A minority was because of other causes. The table shows that in Europe, 23% of the total land had been degraded

as a result

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of deforestation, over-cultivation, and overgrazing at 9.8%,7.7%, and 5.5% respectively. Over-grazing was the largest impact on just above one-tenth of the total land degraded, deforestation has contributed to only 1.7%.

Lastly

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was North America with only 5% of the total land being degraded. The most common cause was

due to

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over cultivation at 3.3% followed by overgrazing at 1.5% and

finally

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deforestation at 0.2%.