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

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pie chart and table illustrate the main reasons why agricultural

land

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became less productive and how these causes affected three regions in North America,

Europe

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, and Oceania during the 1990s.

Overall

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, the main causes of global

land

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degradation were over-grazing,

deforestation

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, and

over-cultivation

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, with over-grazing being the most significant contributor. Among the three regions,

Europe

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experienced the highest percentage of degraded

land

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.

According to

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the pie chart, over-grazing accounted for 35% of global

land

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degradation, followed by

deforestation

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at 30%, and

over-cultivation

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at 28%. The remaining 7% was

due to

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other causes. The table reveals that

Europe

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had the most serious

land

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degradation, with 23% of its

land

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affected. The primary reason in

Europe

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was

deforestation

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9.8%, followed by

over-cultivation

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7.7% and over-grazing 5.5%. In Oceania, 13% of

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land

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the land

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was degraded, with over-grazing 11.3% being the main cause, and no

over-cultivation

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reported

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was reported

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. North America had the lowest percentage 5%, where

over-cultivation

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3.3% was the leading cause,

while

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deforestation

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and over-grazing contributed less. In conclusion, over-grazing was the major cause worldwide, and

Europe

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was the most affected region

overall

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.