The pie chart below shows the main reasons why agricultural land is becoming less productive. The table shows how these causes affected three regions of the world during the 1990s.

The pie chart presents the percentages of the main causes agricultural ground becomes less productive,

whereas

the table shows how it can

impacted

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impact

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several different regions

such

as North America, Europe, and Oceania in the 1990s.

Overall

, worldwide land degradation was dominated by over-grazing (35%), deforestation (30%), and over-cultivation (28%).

According to

the data, over three countries, Europe has the highest percentage among the three categories. To be precise, the portion of 9.8% is deforestation.

Then

followed by more than one in twenty, 7.7%, in over-planting, and a small majority of 5.5% in over-grazing. In total, 23% of land is degraded in Europe.

On the other hand

, North America was the lowest country that was impacted by degradation, just one in twenty.

While

Oceania was the second rank that was highly affected by degradation. It can be clearly seen, from three causes, the percentage of 11.3% caused by the increase in over-grazing.