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 pie chart illustrates the primary causes of productivity decline in agricultural lands,

while

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the table shows the impact of these causes on three regions: North America, Europe, and Oceania in the 1990s.

Overall

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, over-grazing and deforestation were the largest contributors to agricultural

degradation

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. European countries were the most affected,

while

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North America was the least impacted. The largest cause of reduced productivity in agricultural lands is over-grazing, which accounts for 35%. Deforestation and over-cultivation

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contribute significantly, with nearly 30% and 28% of

land

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degradation

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, respectively. The smallest proportion is attributed to other causes, at just 7%. In the 1990s, European countries were particularly affected by deforestation, which caused 9.8% of

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the

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total

land

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degradation

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. Over-cultivation and over-grazing

also

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had a significant impact in Europe, contributing 7.7% and 5.5%, respectively, which together accounted for 23% of the total

land

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degradation

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. In North America, over-cultivation had the greatest effect, causing 3.3% of the

land

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degradation

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, with the

overall

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total being only 5%. Oceania,

on the other hand

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, was not significantly affected by over-cult