Ключевые слова: abstract, air, asia, background, black, cancer, carbon, chemical, climate, coal, danger, dangerous, dark, dioxide, ecology, effect, element, emblem, emission, energy, environment, environmental, factory, fantasy, fire, flowing, fog, fuel, gas, global, gray, greenhouse, health, industrial, industry, mask, pipe, plant, poison, pollute, polluting, pollution, problem, protection, smog, smoke, stream, toxic, warming, white,