The chart below shows the average daily minimum and maximum levels of two air pollutants in four big cities in 2000.
Sample Response
Presented in the illustration is the bar chart that lowest and highest levels of two kinds of air contaminants among four4 cities, namely Los Angeles, Calcutta, Beijing, and Mexico, in 2000.
Overall, it is clear that the levels of both pollutants in Mexicolevel of pollution in Mexico is higherworse and more serious than in the other citiesother towns.
To illustrate, the level of sulphur dioxiderate of Sulphur in the air inof Los Angeles ranged from merely 1 to 10, which was remarkably lower than that of the other three citiesaforementioned cities. Meanwhile, Mexico had the highest level of this pollutant ranging from 80 to 200which varied from 80 to 200 in 2000. Although the minimum SO2 levels were 47 and 25minimum level of SO2 was 47 and 25, respectively, in Calcutta and Beijing, the maximum levelrange went up to 130 in the latter citytown, which was almost double the figure of the former cityone.
ForWith the second pollutant, Mexico continued to be dominant with the maximum level at 200, which was almost ten times higher than Beijing and four times higher than the data of Calcutta and Los Angeles. At the same time, the upper level of N2O was in Los Angeles higher than Calcutta and Beijing.
Why this response received Band 6.0
The report is logically organised by pollutant and identifies Mexico as the most polluted city, with several accurate SO2 comparisons. Its main weakness is uneven data accuracy and coverage: the N2O discussion omits minimum levels and seriously overstates some comparisons. The priority is to check each calculation against the chart and present a fuller overview contrasting Mexico with the generally lower readings in the other cities.
IELTS Writing Criteria Scores
Task Achievement
A relevant overview and several accurate SO2 figures are provided, but N2O coverage is incomplete and some proportional comparisons are substantially inaccurate.
Verify the N2O values and ratios, include its minimum as well as maximum levels, and broaden the overview beyond Mexico alone.
Coherence and Cohesion
Information is arranged clearly in an introduction, overview, and separate pollutant paragraphs, with generally logical progression and effective referencing.
Make the final comparison sequence more explicit so that every pronoun and comparative phrase has an unmistakable reference.
Lexical Resource
The response uses a reasonable range of topic vocabulary, though collocations such as rate of Sulphur and dominant are sometimes imprecise for chart description.
Use exact terms such as SO2 level, minimum reading, and maximum concentration, while avoiding evaluative wording not supported by the chart.
Grammatical Range and Accuracy
The writer attempts varied complex structures, but missing sentence elements, awkward comparative order, and article or preposition errors remain noticeable.
Practise complete introductory clauses and standard comparative structures, especially subject plus verb plus higher or lower than.
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IELTS Academic Writing Task 1
The chart below shows the average daily minimum and maximum levels of two air pollutants in four big cities in 2000.
Your response
Write the task yourself, then compare your choices with the annotated response.