Ключевые слова: air, banner, cartoon, change, character, chimney, city, climate, co2, concept, dead, dioxide, dirty, disaster, earth, eco, ecology, emission, environment, factory, future, gas, gas mask, generation, global, health, illustration, industrial, industry, man, mask, nature, planet, plant, poison, poisoned, polluted, pollution, power, protect, protection, protective, respirator, respiratory, smog, smoke, technology, toxic,