We release sewage the most. It is probably the worst kind of pollutant because it is released into lakes, rivers, and etc. Sewage is the most common and the most feared of pollutants because it makes our waters unattractive and dangerous to the fish. If the fish eat the sewage and then we catch them to eat them, they are infected by our pollution and we get sick from them. This is just the act of the food chain.
Oil spills are also a big problem.
It cuts off the oxygen in our water so the water life can t breath and they die. And if the water life is all gone it goes up the food chain and effects each and every one of us. Garbage is also a big factor in the pollution game. It falls in the gutter and travels through the sewage systems and ends up in our fresh or salt waters. Many fish and other water life die by garbage.