The chart below shows the percentage of river water in UK rivers that is classified as having good chemical quality between 1990 and 2002.

The chart below shows the percentage of river water in UK rivers that is classified as having good chemical quality between 1990 and 2002.
IELTS Writing Task Chart for The chart below shows the percentage of river water in UK rivers that is classified as having good chemical quality between 1990 and 2002.
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The given line graph illustrates the proportion of classified river water which contains high-
quality
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substances
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in different
rivers
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in the UK from 1990 to 2002. The unit is measured in percentage. From an
overall
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perspective, the
rate
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of beneficial chemical
quality
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had an upward trend in all
rivers
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, with the exception of
Wales
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.
Additionally
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,
Wales
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and Northern
Ireland
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contained a majority of advantageous
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substances
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substance
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quality
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rates over the period. As can be obviously seen from the chart, the positive
rate
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of nutrition
quality
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in
Wales
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and Northern
Ireland
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had the opposite trend during 1999. The
quality
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substances
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rate
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in
Wales
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and Northern
Ireland
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was approximately 95% and 85%, individually,
then
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, the situation shifted during the subsequent year. In the year 1999, the beneficial proportion of the chemical
quality
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rivers
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in Northern
Ireland
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surpassed
this
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figure in
Wales
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and culminated at 95%,
while
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this
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rate
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in
Wales
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was about 80%.
In addition
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, the data indicates that
,
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apply
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about 45% and 25% of advantageous
substances
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are contained in the water of England
rivers
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and Scotland
rivers
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, respectively.
According to
Linking Words
England
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rivers
Capitalize word
Rivers
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, the chemical
quality
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rate
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experienced a fluctuation with the ending point at nearly 46% by the end of the observed period. In reference to Scotland’s
rivers
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, the
quality
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proportion of beneficial
substances
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had a significant increase to about 55% in 2003 before it witnessed a downward trend to exactly 40% over the surveyed year 2002.

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Vocabulary: Replace the words substances, rivers, rate, quality, wales, ireland with synonyms.
Vocabulary: The word "proportion" was used 3 times.
Vocabulary: The word "trend" was used 3 times.
Vocabulary: The word "about" was used 3 times.
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