Ключевые слова: aerial, air, aircraft, airplane, bacterium, biology, biomass, bird, circle, cleaning, construction, dirty, ecology, environment, europe, facility, factory, flight, flow, fly, garbage, industrial, industry, land, plane, plant, poland, processing, purification, purified, purity, recycle, recycling, reduce, removal, river, road, sewage, sky, sludge, smell, tank, treatment, tree, unpleasant, urban, view, waste, water, wroclaw,