Keywords
18-19 years, 20's, 20-24 years, 20-25, 20-30, 20s, 25-30, 3, 40's, 40-45, 40-50, 40s, 45-50, 50-54 years, 50-55, 50-60, 55-60, access, adult, analysis, asian, asian ethnicity, biology, caucasian, class, classmate, classroom, college, color, color image, colour, computer, concentrating, concentration, confidence, confident, cooperation, counseling, data, education, educator, examining, experiment, experimentation, experimenting, far eastern, fellow, female, fifties, fifty, forties, forty, gal, gentleman, glove, guidance, guy, hispanic, horizontal, human, human being, indoor, indoors, information, inside, instructing, instruction, instructor, intelligence, knowledge, lab, laboratory, lady, latin, latin american, latin american and hispanic ethnicity, learning, male, man, mature adult, mature women, microbiology, mid life, middle age, middle aged, middle-age, middle-aged, multi-ethnic group, multicultural, multiculturalism, observation, oriental, partner, partnership, pc, people, person, personal computer, photography, professor, pupil, r&d, research, research & development, research and development, researching, rubber glove, rubber-glove, school, schoolmate, schoolroom, science, seated, selective focus, serious, seriousness, sitting, solemn, somber, student, studying, teacher, teaching, team, teamwork, technology, test tube, three, three people, tuition, tutor, tutoring, twenties, twenty, university, vigilance, waist up, waist-up, watching, western european, wisdom, woman, women, working together, young adult, young men, young women, 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, blm016474