The graph below shows the pollution levels in London between 1600 and 2000.
The provided graph illustrates the amount of pollution in London, measured in
micrograms
per cubic metre
, from 1600 to 2000. In this
essay, we are going to explain the comparison of trends for the parameters.
Overall
, the chart compares the levels of sulphur
dioxide
and smoke
per micrograms
per cubic metre
as the representing indicators. Starting at 0 micrograms
per cubic just before 1600, both levels started to increase in the following years before declining much later around 1900 and ending at 0 in 2000.
According to
the data, we can observe that the quantity of sulphur
dioxide
and smoke
diverged in 1600 since sulphur
dioxide
rose more rapidly. Sulphur
dioxide
numbers shot up from 0 to a little below 750 micrograms
per cubic metre
between 1600 and 1700, whereas
smoke
grew only from 0 to less than 250 during the same period. Subsequently
, the volume for both remained to rise steadily until the year 1850 when sulphur
dioxide
levels reached an all-time high at approximately 800 micrograms
per cubic metre
. This
is followed by a sharp decrease to as low as 500 micrograms
per cubic metre
in the 1940s, before continuing to decline to 0 in 2000. Similarly
for smoke
, it grew to its highest record in 1900 at 450 micrograms
per cubic metre
before declining after that. Even as the numbers moved erratically from 1900 to 1950, eventually the amount of smoke
recorded in 2000 converged with that of sulphur
dioxide
at 0 micrograms
per cubic metre
.Submitted by lppwinahyu on
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Vocabulary: Replace the words micrograms, metre, sulphur, dioxide, smoke with synonyms.
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Vocabulary: The word "amount" was used 2 times.
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