Ключевые слова: accident, air, atmosphere, carbon dioxide, carbon neutral, chemical, chimney, city, climate, concept, dangerous, earth, eco, ecological, ecology, electricity, emissions, energy, environment, environmental, exhaust, factory, forest, global warming, green, industrial, industry, manufacture, manufacturing, nature, ozone, plant, pollute, polluted, pollution, problem, problems, production, protection, safety, smog, smoke, steam, structure, technology, toxic, tree, urban, waste,