Ключевые слова: against, air, blue, building, carbon, chemical, chimney, clear, climate, cloud, construction, contamination, day, dioxide, ecology, emission, energy, environment, environmental, exhaust, factory, fuel, fume, gas, generation, global, harmful, industrial, industry, manufacturing, oil, pipe, plant, pollution, power, sky, smoke, smokestack, stack, stacks, steam, sunny, sunshine, tower, vapor, warming, waste, white,