The pie charts below show the different reasons for flight delays in a particular Asian country in 2015 and 2016. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The pie charts below show the different reasons for flight delays in a particular Asian country in 2015 and 2016. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
IELTS Writing Task Chart for The pie charts below show the different reasons for flight delays in a particular Asian country in 2015 and 2016. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
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The pie charts illustrate the proportion of five various reasons that caused flight delays in one Asian country in the years 2015 and 2016.
Overall
Linking Words
, operations management of airlines has the highest percentage in both years,
while
Linking Words
the least happened reason was airport security in 2015 and military factors in the
next
Linking Words
year. In 2015, the operation management process was the reason for more than two-fifth of delayed cases,
while
Linking Words
air traffic control affected 25 per cent and bad weather was 4 per cent less than traffic control.
Whereas
Linking Words
the military effect impacted 10 per cent and the security of the airport affected just only 4%. Moving to flight delays in 2016, the most impact cause was still operation management at 46% (6% more than
last
Linking Words
year),
however
Linking Words
, bad weather was the
second
Linking Words
most
effect
Replace the word
effective
show examples
reason with 23% and the
third
Linking Words
one was airport security at 13%.
Although
Linking Words
air traffic control's figure dropped by more than half to 12% it was still not the least factor, soldier impact was lowest among causes with only 6%.

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Sentences: Add more complex sentences.
Linking words: Don't use the same linking words: "while".
Basic structure: Change the third paragraph.
Vocabulary: Only 5 basic words for charts were used.
Vocabulary: Use several vocabularies to present the data in the third paragraph.
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