Ключевые слова: adult, adults only, analyzing, biochemistry, biology, biotechnology, chemical, chemist, chemistry, color image, concentration, contemplation, cosmetic, development, discovery, ecosystem, education, environmental conservation, examining, expertise, exploration, healthcare and medicine, holding, horizontal, indoors, lab coat, laboratory, liquid, looking, material, medical research, microbiology, nature, occupation, one person, people, purity, real people, research, science, scientific experiment, scientist, social issues, sparse, student, technology, working, young adult,