Tai lake, outside the ancient city of wuxi, is almost lifeless because of pollution from industries along the lake and pesticides from nearby farms. what is another major source of pollution in tai lake?

Another big pollutant of Lake Tai is the organic pollution, otherwise known as eutrophication. It is not one part of the lake that is affected by this type of pollution, but it's all of it. This pollution is caused by big amounts of nitrates and phosphates in the water, they cause algal bloom which decreases the oxygen level in the lake and most of the living organisms die off, the water is also in no way for drinking.

Maybe a horizontal because its a pattern