A glance at the pie chart given illustrates the major reasons 
of
 less productive Change preposition
for
of 
agricultural Change preposition
apply
land
. Use synonyms
Also
, the table given displays the way Linking Words
of 
these Change preposition
apply
causes
 impacted three regions in the world, particularly  North America, Europe, and Oceania, in the 1990s. The Oceania contains Australia and New Zealand. Based on an Use synonyms
overall
 perspective, it can be seen that Linking Words
the 
over-grazing attained the first position for Correct article usage
apply
causes
 of Use synonyms
land
 degradation in the world, Use synonyms
while
 other Linking Words
causes
 took the Use synonyms
last
 spot. Linking Words
On the other hand
, Europe obtained Linking Words
the 
first place for Correct article usage
apply
region
 Add an article
the region
a region
which
 Change preposition
in which
the 
Correct article usage
apply
land
 Use synonyms
degraded
 by 23%, Add a missing verb
was degraded
while
 North America got the Linking Words
last
 position by 5%.
From an initial figure, the reasons Linking Words
of
 Change preposition
for
land
 degradation in the world were over-grazing by 35%, Use synonyms
deforestation
 by 30%, Use synonyms
over-cultivation
 by 28%, and other Use synonyms
causes
 by 7%, respectively. 
From the next figure, Europe took the first place which contained Use synonyms
deforestation
 by 9.8%, Use synonyms
over-cultivation
 by 7.7%, and over-grazing by 5.5%, respectively. Use synonyms
Moreover
, the second place was Oceania that contained over-grazing by 11.3% and Linking Words
deforestation
 by 10.7%. It is interesting to see that in Use synonyms
this
 area, there was no Linking Words
over-cultivation
. Use synonyms
Furthermore
, the Linking Words
last
 spot was North America, Linking Words
that
 its Change preposition
with
deforestation
 Use synonyms
only
 0.2%,  over-grazing by 1.5%, and Change preposition
of only
over-cultivation
 by 3.3%, respectively.Use synonyms