The graph below shows the pollution levels in London between 1600 and 2000.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Write at least 150 words.
Overall, Sulphur dioxide is the one that consitantly had higher pollution level than Smoke over the period of 400 years.
To begin with,Sulphur dioxide started with just above zero pollution level in 1600 and it continued to rise for the next fifty years. In between 1650 to 1700, it experienced a sudden fall in pollution level after reaching near 750 micrograms per cubic metre. But after that, it again had a sharp increase and crossed the 750 micrograms per cubic metre mark and the pollution level again started dropping until 1750.
After 1750, it maintained a steady level for almost for the next 50 years. Just a few years before 1800, it again started rising and crossed the 750 mark reaching close to the 1000 micrograms per cubic metre level between 1800-1850. After 1850, the pollution level underwent through some fluctuations and right before the start of the 20th century, it started decreasing. For the next 100 years, pollution level dropped continuously reaching nearly zero level in 2000.
On the other hand, the pollution level of smoke climbed continuously higher from nearly zero level for the next 300 years after 1600 although having random fluctuations during the period 1700-1750 and 1850-1900. Surprisingly, like Sulpher dioxide the pollution level due to Smoke began to reduce at the same time when the Sulpher dioxide’s pollution started falling. The pollution level reached nearly zero in 2000 just asSulpherdioxide after experiencing fluctuations during the period.
Feedback score: 7+
The line graph shows the amount of air pollution caused from Sulphur dioxide and smoke in London up to 400 years starting from the year 1600.
There are two different lines indicating the level of pollution in terms of the weight of both Sulphur dioxide and smoke in micrograms per cubic meter. The upper line in the graph indicates that in the year 1600, amount of sulphur dioxide in the air was greater than smoke. Amount of Sulphur dioxide in the air gradually increased over time followed by some fluctuations up to year 1900. The pollution level was high in mid 1800’s. However, the amount of air degradation began to decline sharply after 1900, resulting a almost zero amount in year 2000.
Pollution level from smoke was less compared to that of Sulphur dioxide but the pollution caused from smoke gradually increased with insignificant fluctuations and reached a peak point in around 1890. Then for the next 100 years, it began to decline with some fluctuations and ended up to almost a zero amount in the year 2000.
Time: 20 mins
Feedback score: 7.5