Ключевые слова: 20s, 30s, biology, blue, caucasian, chemical, chemistry, college, education, educational, experiment, experimenting, female, formula, gloves, goggles, holding, injecting, lab, laboratory, learn, learning, male, man, medical, medicine, mid adult, plant, plants, protective suit, research, researching, safety glasses, science, scientific, scientist, standing, structure, students, study, studying, syringe, tests, tomato, university, wearing, woman, young adult,