The two pie charts compare the pollution of a particular area of the ocean in 1997 and 2007.
Overall
, it can be seen that in both years the most significant reasons for contamination were domestic sewage and pollutants from the air Linking Words
while
farm water and litter had minimal effect on the environment.
In terms of pollutants, it had minimal changes over the ten years period, from 30% to 33%. Linking Words
Next,
the most harmful effect on the ocean had domestic sewage, with 18% in 1997 and 32% in 2007. Marine transport waste had 22% in 1997 as opposed to in 2007 where it represented 8%.
With Linking Words
regards
to the remaining reasons for contamination, there was a considerable change in offshore oil from 5% to 15%. Meanwhile, industrial waste decreased from 17% to 10%. Fix the agreement mistake
regard
Finally
, pollution of litter disappeared in 2007, Linking Words
although
in 1997 it accounted for 4%.Linking Words
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