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 diagrams give information about the causative factors of agricultural downward productivity all over the world and the

three

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affected regions with details in the 1990s.

Overall

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, the trend classifies the four main reasons for the

land

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degradation into: overgrazing,

deforestation

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, overcultivation and others, where the overgrazing as the main cause. The data present in percentage and detailed description of the

three

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additional regions were given: North

America

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,

Europe

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and Oceania. At

first,

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the pie chart in 1999s witnessed overgrazing for all world agriculture as the most major effect for

land

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became less productive by 35%. It is followed by

deforestation

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by 30%

while

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over-cultivation by 28% and the other factors resulted in only one fifth of the highest proportion.

On the other hand

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, the data from the table specifically segregated focusing on the

three

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major reasons described previously within

three

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given regions.

Europe

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was significantly affected by 23% and followed by Oceania with 13% from the total

land

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while

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North

America

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showed the least affected by 5%.

In contrast

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with the data for the overworld as similar as in Oceania’s

land

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degradation

whereas

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the overgrazing activities became the main culprit, both North

America

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and

Europe

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showed different results. In

Europe

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,

deforestation

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had greatly affected almost half of the

land

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productivity by 9.8%

while

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over-cultivation in North

America

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caused more than half of the affected

land

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by 3.3%.

In contrast

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, no over cultivation but overgrazing by 11.3% over 13% in Oceania mainly caused the

land

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degrade with the activity of

deforestation

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by 1.7%