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.

The given pie chart depicts the major

causes

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of worldwide

land

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degradation

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while

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the table illustrates the percentage of

land

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degradation

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in

three

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areas namely North America, Europe, and Oceania was affected by the

reasons

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during the 1990s. In general, the main

causes

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of

land

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degradation

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were dominated by over-grazing, over-cultivation, and deforestation.

Also

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, those

three

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reasons

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affected mostly in the

three

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countries.

According to

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the data, the biggest

degradation

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of

land

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was made by over-grazing (35%).

Similarly

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, both over-cultivation and deforestation donated almost the same percentage of 28% and 30% respectively. Meanwhile, the least

causes

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of

degradation

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in the farming field were by other

reasons

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, just 7%.

Furthermore

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, those

causes

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affected the

three

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countries. Europe was the country having the biggest impact of the

reasons

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, which was 23%.

On the other hand

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, North America had just 5% in total

land

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degradation

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and was less than Oceania with just 13%.