Ключевые слова: animal, background, beach, beige, bio, breathe, chemistry, concept, contaminate, danger, dangerous, dead, deadly, death, dirty, disaster, dying, ecology, ecosystem, emissions, environment, environmental, fish, food, help, killing, lake, life, marine, microbes, natural, nature, ocean, outdoor, outdoors, oxygen, poison, poisoned, polluted, pollution, problem, river, rotten, sand, sea, season, shore, ugly, waste, water,