The pie chart demonstrates the primary causes why the lands, which have been used for agriculture are becoming less productive. The table illustrates three continents as an example during the 1990s in percentages.
To begin with, the principal reason why agricultural lands of the world are becoming less productive is over-grazing (35%), whereas the least percentage belongs to other reasons (7%).
However, these percentages are different in particular areas. As a salient example, I can give Europe. Because this continent's lands are mostly degraded by deforestation (9.8%), while over-grazing (5.5%) has the least percentage. But the same cannot be said about North America, because most of its lands are worsened by over-cultivation (3.3%). Moreover, this continent has the lowest percentage of total land degradation (5%), whereas Europe and Oceania have quite high percentages. One must note that Oceania doesn't spoil its lands by mean of over-cultivation (0%).
To sum up, every reason differs from area to area and has unmatchable percentages of land degradation.
To begin with, the principal reason why agricultural lands of the world are becoming less productive is over-grazing (35%), whereas the least percentage belongs to other reasons (7%).
However, these percentages are different in particular areas. As a salient example, I can give Europe. Because this continent's lands are mostly degraded by deforestation (9.8%), while over-grazing (5.5%) has the least percentage. But the same cannot be said about North America, because most of its lands are worsened by over-cultivation (3.3%). Moreover, this continent has the lowest percentage of total land degradation (5%), whereas Europe and Oceania have quite high percentages. One must note that Oceania doesn't spoil its lands by mean of over-cultivation (0%).
To sum up, every reason differs from area to area and has unmatchable percentages of land degradation.
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