Ключевые слова: acid, air, air pollution, atmosphere, atmospheric, burning, business, chimney, climate change, company, deadly, destructive, dioxide, dirt, ecologic, ecological, ecology, ecosystem, electric, gas, generate, global warming, grime, heating, heaven, industrial, industry, manufacture, motion, natural disaster, ozone, petrochemical, poisoning, polluting, refinery, shadow, smog, smoke, smokestack, social issues, solar, spin, swirl, system, technical, technology, toxic, warming, wind, worldwide,