The presented graphs compare the causes that led to reduce the productivity of agriculture and the impacts of those in three various areas including: North America, Europe and Oceania during a specific period of the 1990s.
Overall
, over-grazing had the most significant cause to fall the productivity of agriculture, Linking Words
whereas
others had the least cause. Linking Words
In addition
, Europe had the highest ratios of causes of degradation over time.
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According to
the given diagram, it can be observed that overgrazing took place as the main reason with more than one-third of the proportion, followed by deforestation with a level of 30%.
By taking a closer look at the data, it can be seen that in North America the land was degraded by a small fraction, 5% in total. Linking Words
While
, in Europe, the main cause of degradation was deforestation with a level of almost 10%, Linking Words
whereas
over-cultivation was 7.7% of the proportion. Linking Words
However
, over-cultivation didn’t affect Oceania during the given years.Linking Words
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