The pie chart presents the percentages of the main causes agricultural ground becomes less productive, 
whereas
 the table shows how it can Linking Words
impacted
 several different regions Change the verb form
impact
such
 as North America, Europe, and Oceania in the 1990s. Linking Words
Overall
, worldwide land degradation was dominated by over-grazing (35%), deforestation (30%), and over-cultivation (28%). 
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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. Linking Words
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. 
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On the other hand
, North America was the lowest country that was impacted by degradation, just one in twenty. Linking Words
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.Linking Words