The previous line graph illustrates the levels of contamination displayed in
micrograms
per cubic metre across the Use synonyms
years
1600 to 2000 in the city of London.
Use synonyms
Overall
, it can be clearly seen that Linking Words
sulphur
Use synonyms
dioxide
and Use synonyms
smoke
started with an almost non-existent level of pollution. Use synonyms
However
, they both showed not only some fluctuation but Linking Words
also
growth across the Linking Words
years
, especially Use synonyms
sulphur
Use synonyms
dioxide
which displayed a much higher proportion than Use synonyms
smoke
. Use synonyms
At the end
of the period, they both decreased as how they were at the beginning.
In detail, in 1600, Linking Words
sulphur
Use synonyms
dioxide
and Use synonyms
smoke
demonstrated a level of contamination of just over 0 Use synonyms
micrograms
per cubic metre. Use synonyms
Linking Words
However
Add a comma
However,
sulphur
Use synonyms
dioxide
revealed a dramatic increase of around 750 Use synonyms
micrograms
from the Use synonyms
years
1700 to 1900, the one that completely decreased in the year 2000.
Use synonyms
In contrast
, Linking Words
although
Linking Words
smoke
Use synonyms
also
exhibited some growth over the Linking Words
years
(especially a dramatic increase between the Use synonyms
years
1850 and 1900, showing levels around 275 Use synonyms
micrograms
per cubic metre), it showcased certain fluctuations and Use synonyms
finally
by the year 2000 it recorded a sharp decrease to around 0%.Linking Words
nila.hiperu