The chart below shows the levels of air pollution in three major cities (City A, City B, and City C) from 2010 to 2020. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The chart illustrates the levels of air pollution in three major cities—City A, City B, and City C—between 2010 and 2020. Overall, while all three cities experienced fluctuations in pollution levels over the decade, City A had the highest levels throughout the period, whereas City C remained the least polluted. In 2010, City A recorded […]