Keywords
18-19 years, 2, 20's, 20-25, 20-30, 20s, 25-30, 40's, 40-45, 40-50, 40s, 45-49 years, 45-50, 50-55, 50-60, 55-60, accessory, adult, brown hair, brunette, bunsen burner, caucasian, chemistry, chemistry class, class, classroom, college, color, color image, colour, considering, contemplation, counseling, day, daylight, daytime, defending, discovery, educating, education, educator, fellow, female, fifties, fifty, focus on foreground, forties, forty, front view, gal, gentleman, glove, goggles, guidance, guy, hispanic, horizontal, human, human being, indoor, indoors, information, inside, instructing, instruction, instructor, intelligence, knowledge, lab, lab coat, laboratory, lady, latin, latin american, latin american and hispanic ethnicity, latina, learning, male, man, mature adult, mature men, mid life, middle age, middle aged, middle-age, middle-aged, multi-ethnic group, multicultural, multiculturalism, obscured face, observing, occupation, people, person, photography, pondering, protection, protective eyewear, pupil, research, rubber glove, rubber-glove, safeguard, safety, school, schoolroom, science, science class, scientific experiment, seated, security, sitting, spectating, spectator, standing, student, studying, teacher, teaching, thinker, thinking, training, tuition, tutor, tutoring, twenties, twenty, two, two people, university, viewing, waist up, waist-up, watching, western european, white coat, wisdom, woman, women, young adult, 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, blm016672