Ключевые слова: abstract, backgrounds, brown, bulgaria, clay, climate, colors, concepts, damage, desert, destruction, dirt, dirty, disaster, ecological disaster, effect, empty, environment, extreme, flat, global, green, heat, horizontal, image, industry, land, landscapes, mud, natural, nature, no people, outdoors, pollution, problems, scenics, state, substance, summer, swamp, temperature, terrain, toxic, travel, unhygienic, view,