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 at least 150 words.

TEST TAKER'S RESPONSE.

The pie chart compares the reasons on land degradation worldwide, and the table compares how different factors which affected North America, Europe and Oceania in the twenty century. 

It is clear that overgrazing was by far the main problem of worldwide degradation over the pie chart shown. Europe had a higher proportion of land degradation than the rest areas. 

According to the pie chart, overgrazing was the primary reason of land degradation in the world, at 35%, while deforestation ranked the second, with 30%. Over-cultivation was responsible for 28% of degradation, and 7% was the lowest share for unidentified reasons. 

Looking at the table, Europe reported the largest proportion of total land degradation among the three regions, with 23%, which was almost twice the percentage Oceanic lost and more than four times of the figure of North America. To be specific, deforestation in Europe was the principle problem, with 9.8%, fivefold than the magnitude of Oceania while North America experienced a negligible amount. Following with another significant problem in Europe by over-cultivation, with 7.7%, whereas America counted for half when this was not a problem in Oceania. By contrast, overgrazing witnessed a severe proportion in Oceania, reducing the productivity by 11.3% while North America saw a minimal 1.5% and Europe recorded 5.5%.