The pie chart below shows information about different types of pollutants entering in a particular area of ocean in 1997 and 2007

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

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%.

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

regards

Fix the agreement mistake

regard

show examples

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%.

Finally

, pollution of litter disappeared in 2007,

although

in 1997 it accounted for 4%.