Ключевые слова: air, atmosphere, background, chemical, chimney, climate, concept, damage, danger, dirt, dirty, disaster, earth, eco, ecological, ecology, electricity, emission, emissions, energy, environment, environmental, factory, garbage, gas, global, industrial, industry, manufacturing, marine, nature, ocean, oil, polluted, pollution, problem, production, recycle, recycling, safety, save, sea, sky, smog, smoke, toxic, trash, warming, waste, water,