Ключевые слова: accident, air, atmosphere, big, black, burn, chemistry, climate, cloud, contamination, damage, danger, dark, dirty, disaster, dry, ecology, emergency, emissions, environment, explosion, factory, fire, flame, fuel, future, gas, global, hazard, heat, hot, huge, industrial, industry, nature, outdoor, plant, pollute, pollution, power, refinery, regulations, risk, safety, sky, smog, smoke, substances, thick, warming,