Ключевые слова: adult, air, architecture, building, caucasian, chemical, city, climate, contamination, damage, danger, dirty, ecological, ecology, environment, equipment, factory, gas, global, hazard, health, human, industry, male, man, mask, one, outdoors, people, person, plant, poisonous, pollutant, pollution, problem, protection, protective, safe, safety, smoke, stack, standing, toxic, warming, young,