Ключевые слова: algae, bacteria, bad, chemicals, contamination, debris, degradation, dirty, ecosystem, effluent, eutrophication, filth, garbage, grime, hazardous, illustration, impure, industrial, litter, murky, pathogens, pollution, refuse, runoff, sewage, sludge, squalor, toxins, trash, unclean, unsafe, waste, water,