The pie chart shows the main reason why agricultural land becomes less productive. The table shows how these cause affected three regions of the world during the 1990s.

The chart illustrates the main cause why agricultural

land

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becomes less productive and the table compares how these causes affected North America, Europe, and Oceania ( a large group of islands in the South Pacific including Australia and New Zealand) throughout the 1990s, measured by

percent

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per cent

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.

Overall

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, the causes of

land

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degradation worldwide are divided by over-cultivation, over-grazing, deforestation, and others.

As well as

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the cause of region

land

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humiliation that have four factors. Commence with Europe has the highest percentage which stands out just beneath 10% in deforestation, 7.7% in over-cultivation, and in total 23% of all

land

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degraded. Despite all the top numbers, Oceania increased by 11.3% in over-grazing and made it the highest;

however

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, it has zero

percent

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per cent

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in over-cultivation. As regard to North America that possess little in total

land

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degrated of 5%. In the end, worldwide, over-grazed has reached 35% which has become the highest part of abasement.

By contrast

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, the pie chart didn’t give any details about another element, which has 7%.