Pls find tge error its argent ...
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Pollution is not a new problem nowadays.
In the middle ages,most towns were dirty and diseases spread quickly as the water supplied was foul and bacteria ridden. Much has been done to improve sanitation and public health. In the modern, industrial towns, the disposal of waste becomes quite complicated. As factories produce fertilisers and chemicals, solid waste is thrown out in the form of rubbish These rubbish heaps are an unpleasant sight to watch. Getting rid of plastics is particularly difficult.
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