Actual IELTS Exam, Academic, Writing Task 1, 4 March 2021, INDIA

Actual IELTS Exam, Academic, Writing Task 1, 4 March 2021, INDIA

Q.The chart below shows the average daily minimum and maximum levels of two air pollutants in four big cities in 2000. Summarize the information by selecting and reporting key features, and make comparisons if necessary.

The given vertical bar chart illustrates the lowest and highest levels of Sulphur dioxide and Dinitrous oxide, measured in micrograms per cubic metre, in four cities, namely Los Angeles, Calcutta, Beijing and Mexico in 2000.
 

Mexico City’s peak maximum dinitrous oxide level is 207, which is twice as high as the level in Los Angeles and four times higher than the levels in Calcutta and Beijing. Likewise, the minimum dinitrous oxide level of 113 in Mexico City was 8 times higher than Beijing, which was the city with the lowest minimum dinitrous oxide level, while its maximum dinitrous oxide level was 3 and 4 times higher than those of Los Angeles and Calcutta.

The level of Sulphur dioxide in the air of Los Angeles has the lowest average high and lows by a significant amount. Peak Sulphur dioxide levels in Los Angeles in 2000 were only 10, which was 6 times lower than the Calcutta. At the other end of the scale, peak SO2 levels in Beijing were 100, while in Mexico City they were at 200. Los Angeles also had the lowest minimum Sulphur dioxide at just 2, making it 40 times lower than Mexico City’s minimum Sulphur dioxide. Interestingly, Beijing’s minimum SO2 was 25, which was only half of Calcutta’s minimum SO2, which was not far below its peak.

 

Overall, the average content of these two components of air pollution in Mexico City is much higher than in the other three cities.

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