The pie chart below shows the main reasons why agricultural land become lesson productive. The table shows how these causes affected three regions of the world during the 1990s.

The table and pie chart provide information about the four main causes of why agricultural

land

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became less productive in three different regions in 1990.

Overall

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, the proportions of these reasons exhibited different distributions across the given regions; some,

such

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as over-grazing, registered the highest share,

whereas

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North America recorded the least

land

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degradation.

However

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, these figures varied among them. As the pie chart illustrates, the over-grazing segment was considered the main cause of degradation, standing at 35%,

while

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deforestation ranks second at 30%. The over-cultivation group

also

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represents a significant figure, achieving 28%, and only 7% was attributed to the other segment.

On the other hand

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, Europe was classified as the most degraded

land

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with 23%, taking into account that 9.8% comes from deforestation. There were 13% of degraded lands in Oceania, and the majority was from over-grazing with 11.3%, making it the second most degraded

land

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.

Finally

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, the North America region registered the lowest figure among others, with just 5% in total.