Ключевые слова: air, bad ecology, blue, chemical, chimney, climate, concrete, copy space, dioxide, dirty, ecology, electricity, emissions, energy, engineering, environment, environmental, exhaust, factory, fumes, gas, global, global warming, industrial, industry, infrastructure, manufacturing, ozone, petrochemical, pipe, plant, poison, pollute, pollution, power, power station, production, sky, smog, smoke, station, steam, structure, technology, tower, toxic, warming, waste, white,