Keywords
18-19 years, 20's, 20-25, 20-30, 20s, 25-30, adult, analysis, background people, biology, caucasian, class, classmate, classroom, college, color, color image, colour, concentrating, concentration, confidence, confident, copy space, education, educator, examining, experiment, experimentation, experimenting, fellow, gentleman, glove, guy, holding, horizontal, human, human being, indoor, indoors, information, inside, instructing, instruction, instructor, intelligence, knowledge, lab, laboratory, learning, looking down, male, man, microbiology, negative space, observation, one, one person, people, person, petri dish, photography, portrait, portraiture, professor, profile, pupil, r&d, research, research & development, research and development, researching, rubber glove, rubber-glove, school, schoolmate, schoolroom, science, scrutinizing, seated, selective focus, serious, seriousness, side view, side-view, sitting, solemn, somber, student, studying, teacher, teaching, tuition, tutor, tutoring, twenties, twenty, university, vigilance, waist up, waist-up, watching, western european, white space, wisdom, young adult, young men, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, blm016473