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 circle graph presents information about the primary causes of agricultural

land

degredation globaly

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degradation globally

in the 1990s,

while

the table presents the specific impacts of these causes on three regions North

America

,

Europe

, and

Oceania

. Overview, the main reasons for

land

degradation

were over-cultivation 35%, deforestation 30%, and overgrazing 28%, with other

factor

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factors

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contributing to the left 7%. Regionally,

Europe

experienced the highest level of

land

degradation

at 23%, primarily

due to

over-cultivation.

In contrast

, North

America

and

Oceania

reported lower rates of total

land

degradation

, at 13% and 5% respectively. Deforestation was the primary cause of

land

degradation

in North

America

0.2% and

Europe

9.8%,

whereas

over-grazing had

significant

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a significant

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impact in

Oceania

5.5%. The most striking feature was that over-cultivation had zero impact in

Oceania

as it was mostly affected by over-grazing.

Overall

,

while

overcultivation

Correct your spelling

over-cultivation

over cultivation

, deforestation, and over-grazing were the leading causes of agricultural

land

degradation

worldwide, their distribution varied notably across North

America

,

Europe

, and

Oceania

during the 1990s.