Ключевые слова: animal, bad, black, contaminate, contaminated, danger, dangerous, dark, dead, death, dirty, eco, ecological, ecology, ecosystem, environment, environmental, fish, float, fly, food, fumble, fumbling, harmful, lake, nature, poison, pollute, polluted, pollution, pond, problem, river, rotten, salmon, sewage, smell, stink, toxic, waste, wastewater, water,