The reasons leading the global area degradation are illustrated in the pie chart, which is followed by a table providing a breakdown of data
upon
the influence of those causes on three areas of the world, including North America, Europe and Oceania in the 1990s. All figures are measured in percentage.
Change preposition
on
Overall
, it is clear from the first graph that both over-grazing and deforestation were Linking Words
two
main culprits reducing ground productivity. Correct article usage
the two
As a consequence
, Europe had been affected the most severely Linking Words
in
soil degradation during the 1990s.
Looking at the pie chart, 35% of the total tract Change preposition
by
were
degraded by over-grazing, which was followed by 30% deforested. Over-cultivation was Correct subject-verb agreement
was
also
responsible for the reduction in quality of 28% of soil, Linking Words
meanwhile
other factors were not Add a comma
,meanwhile
being
significant factors.
Unnecessary verb
apply
According to
data from the table, the proportion of infertile soil in Europe reached nearly a quarter of Linking Words
total
continent area. Add an article
the total
Whereas
, the figure in Oceania was nearly Linking Words
a
half; Correct article usage
apply
however
, it was suffering the biggest impact from over-grazing. Linking Words
In contrast
, only 5% Linking Words
unproductive
estate made North America became the least affected region Change preposition
of unproductive
among
Change preposition
of
three
areas in the year of 1990s.Correct article usage
the three
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