Ключевые слова: air, atmosphere, building, business, carbon dioxide, chemical, chimney, construction, dioxide, dirty, ecology, energy, environment, environmental damage, exhaust, factory, fuel, fumes, gas, global, global warming, greenhouse, industrial, industry, manufacturing, metal, modern, nature, oil, ozone, pipe, pipes, plant, pollution, power, production, research, science, sky, smoke, smokestack, stack, steam, storage, structure, technology, tower, toxic, warming, white,