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

affected regions with details in the 1990s.

Overall

, the trend classifies the four main reasons for the

land

degradation into: overgrazing,

deforestation

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

three

additional regions were given: North

America

,

Europe

and Oceania. At

first,

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

land

became less productive by 35%. It is followed by

deforestation

by 30%

while

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

On the other hand

, the data from the table specifically segregated focusing on the

three

major reasons described previously within

three

given regions.

Europe

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

land

while

North

America

showed the least affected by 5%.

In contrast

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

land

degradation

whereas

the overgrazing activities became the main culprit, both North

America

and

Europe

showed different results. In

Europe

,

deforestation

had greatly affected almost half of the

land

productivity by 9.8%

while

over-cultivation in North

America

caused more than half of the affected

land

by 3.3%.

In contrast

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

land

degrade with the activity of

deforestation

by 1.7%