This pie charts indictea tge proportion of various pollutant which entered a special part of the ocean in the years of 1997 and 2007. Overall, at the beginning of the year, pollutant from air contributed most, while little had least pollutant that entering in the ocean. In the comparison, at the end of the year pollutant from air and domestic sewage was the largest segment caused pollution in ocean and the lowest contribution was made up by litter and farm waste.
On having the look at the graph, it is seen from the graph that domestic sewage and offshore oil enter in ocean increased significantly from 18% and 5% for the former year and 29% and 14% for the latter year.
However, in 1997 and 2007, pollutant from air polluted the largest segment of the ocean accounted for 30% and drop slightly to 29 percent at the end of the year.
A similar tend was noticed in the case of industrial waste and marine where the figure decreased sharply was by 8% and 9%, over the given period One more noticable feature of the chatis the percentage of farm water and litter pollutant added in ocean which has decreased by almost 2% from 1997 to 2007