Ключевые слова: background, block, channel, city, congestion, conservation, contaminated, contamination, damage, danger, design, dirty, disaster, dump, eco, ecology, ecosystem, effluent, environment, environmental, factory, filthy, float, foul, garbage, global, horizontal, industrial, industry, lake, landscape, liquid, nature, objects, plastic, pollute, polluted, pollution, pond, problem, river, rubbish, save, technology, tires, trash, urban, waste, water,