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. Write 150 to 170 words.

The pie chart delineates the primary factors contributing to the diminished productivity of agricultural

land

on a global scale,

while

the table presents the impact of these factors on North

America

,

Europe

, and

Oceania

during the 1990s. Globally, over-grazing emerges as the predominant cause of

land

degradation

, accounting for 35% of the productivity loss. Deforestation and

over-cultivation

are

also

significant contributors, responsible for 30% and 28% respectively. Other reasons comprise a smaller fraction of 7%. Regionally, the extent of

land

degradation

varies, with

Europe

experiencing the most severe impact

at

Change preposition

with

show examples

23% of its

land

affected. Over-grazing is the leading cause in

Oceania

, affecting 11.3% of the

land

, despite

this

region having no issues with

over-cultivation

.

In contrast

, North

America

reports the lowest

overall

degradation

at 5%, with

over-cultivation

as its main concern at 3.3%. Deforestation has had a minimal effect on North

America

and

Oceania

, with 0.2% and 1.7% respectively, but is a significant factor in

Europe

at 9.8%. These data indicate that

while

certain causes of

land

degradation

like over-grazing and

over-cultivation

are common across different regions, their impact can vary dramatically.

Europe

's high deforestation rate contrasts with the negligible rates in North

America

and

Oceania

, highlighting regional differences in agricultural practices and environmental management.