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.

The given pie chart depicts the major

causes

of worldwide

land

degradation

while

the table illustrates the percentage of

land

degradation

in

three

areas namely North America, Europe, and Oceania was affected by the

reasons

during the 1990s. In general, the main

causes

of

land

degradation

were dominated by over-grazing, over-cultivation, and deforestation.

Also

, those

three

reasons

affected mostly in the

three

countries.

According to

the data, the biggest

degradation

of

land

was made by over-grazing (35%).

Similarly

, both over-cultivation and deforestation donated almost the same percentage of 28% and 30% respectively. Meanwhile, the least

causes

of

degradation

in the farming field were by other

reasons

, just 7%.

Furthermore

, those

causes

affected the

three

countries. Europe was the country having the biggest impact of the

reasons

, which was 23%.

On the other hand

, North America had just 5% in total

land

degradation

and was less than Oceania with just 13%.