Ключевые слова: abstract, algae, amphibian, amphibious, animal head, backdrop, background, beauty in nature, bog, color image, common frog, contamination, cover, damp, dampness, deep, design, dirt, duckweed, ecology, effluents, environmental conservation, fossil fuel, grass, grass area, green, image, lake, landscape, marsh, plants, pond, river, riverbank, scum, summer, surface, swamp, texture, toad, vertebrate, water, wet, wetlands,