Ключевые слова: algae, autumn, background, birds, blue, bog, bushes, cold, dense, dirty, distance, ecology, fish, floats, foam, forest, green, industry, lake, marsh, microbes, mud, on the shore, park, people, polluted, red, reeds, river, spring, summer, swamp, swim, tourists, trees, ukraine, walk, warm, water, weather, yellow,