Ключевые слова: air, airpollution, apocalypse, botany, care, catastrophe, chemical, climatechange, concept, contaminate, danger, desert, disaster, ecology, environment, factory, fallout, gas mask, globalwarming, green, health, industry, mask, medical, nature, o2, oxygen, poisoned, pollution, prevention, protect, protection, safety, smog, toxic, tree, wasteland,