The pie chart below shows the main reasons why agricultural land becomes less. The table show these causes affected three regions of world during the 1990s.

The

given

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apply

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pie chart provides information about the

percentage

of four factors that

causes

Correct subject-verb agreement

cause

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less

productive

Replace the word

productivity

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of agricultural

land

,

while

the given table illustrates the

proportion

of

three

factors that affected

three

regions of the world during the 1990s.

Overall

, over-grazing

have

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has

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the biggest

proportion

about

Change preposition

of

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the

causes

of agricultural

land

becomes

Wrong verb form

becoming

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less productive

while

the other is the lowest.

In addition

, Europe had the highest

percentage

of

three

Correct article usage

the three

show examples

causes

of

land

degradation

while

North America had the lowest

percentage

except for

over-cultivation

.

To begin

with, over-grazing is the main factor on why agricultural

land

becomes less productive. It takes 35% of all reasons.

Next,

28% of that phenomenon is caused by

over-cultivation

.

Deforestation

takes 30% of the

causes

on

Change preposition

of

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less productive

of

Change preposition

apply

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agricultural

land

. 7% of other factors

also

contribute

on

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to

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less productive agricultural

land

. In Europe,

deforestation

,

over-cultivation

, and over-grazing

ware

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were

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always

took

Verb problem

apply

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the highest

proportion

of the

causes

of

land

degradation compared to the other two countries. The

percentage

were 9.8%, 7.7%, and 5.5% for

deforestation

,

over-cultivation

, and over-grazing respectively with

total

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the total

a total

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number was 23%. Oceania

also

had the same problem

with

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as

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Europe except for

over-cultivation

.

Deforestation

and over-grazing took 1.7% and 11.3% respectively on that phenomenon

while

over-cultivation

took 0%. The total number of that destruction was 13%.

Lastly

, in North America, the

three

reasons

on

Change preposition

for

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that phenomenon took the lowest

proportion

except for the

over-cultivation

. The

percentage

was 0.2% for

deforestation

, 3.3% for

over-cultivation

, and 1.5% for over-grazing with

total

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the total

a total

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number was 5%.