Ключевые слова: acid, air, atmosphere, building, carbon, chemical, chimney, climate, cloud, contamination, damage, dioxide, dirty, ecology, emission, energy, environment, environmental, exhaust, factory, fuel, fumes, gas, global, greenhouse, industrial, industry, manufacturing, ozone, pipe, plant, poison, pollute, polluting, pollution, power, refinery, sky, smog, smoke, smokestack, stack,