Ключевые слова: accidents and disasters, adult, air, barricade tape, biohazard symbol, biotechnology, chemical, concept, damaged, danger, ecology, environment, environmental, epidemic, factory, follows, gas, gas mask, horizontal, human, industrial, industry, looking at camera, man, mask, one person, people, person, poisonous, pollution, protection, protective, radiation, radiation protection suit, radioactive, radioactive contamination, radioactivity, risk, safety, scientist, serious, social issues, stemtopic, working, yellow,