You and your friends plan to go fishing this week. All of you are well prepared and very excited, the moment you reach your nearby river you see a board saying 'Do not consume the fishes of this river', can you think of a reason as to why this board has been placed at that site with such a warning?
Eating these fishes may cause diseases
Water pollution disrupts the natural food chain as well. Pollutants such as lead and cadmium are eaten by tiny animals. Later, these animals are consumed by fish and shellfish, and the food chain continues to be disrupted at all higher levels also. When humans consume such fishes, the pollutants may cause various diseases to the consumers. Such contaminated fishes should be avoided for a healthy well being.