Ключевые слова: air, atmosphere, bills, boiler room, carbon dioxide, chemical, chimney, climate, co2, contamination, dioxide, ecology, energy, environment, environmental, exhaust, factory, firewood, fuel, fume, gas, generation, global, heat, heavy, industrial, industry, logs, material, pay, pipe, plant, pollute, pollution, power, power plant, price of heating, prices, production, rates, resources, services, smog, smoke, station, technology, toxic, tree, wood,