Keywords
16-17 years, 20's, 20-25, 20-30, 20s, 25-29 years, 25-30, 30's, 30-35, 30-40, 30s, 35-39 years, 35-40, 5, accessory, adult, african, african american, african ethnicity, african-american, african-american ethnicity, afro american, afro-american, asian, asian ethnicity, black, bottle, boy, chatting, chemistry, chemistry class, child, chinese ethnicity, classmate, clip board, clip-board, clipboard, college, color, color image, colour, communicating, communication, container, conversation, conversing, day, daylight, daytime, defending, dialog, dialogue, discussing, educating, education, educator, far eastern, fellow, five, five people, gentleman, girl, glove, goggles, guy, head & shoulders, head and shoulders, hearing, high school, high-school, highschool, hispanic, holding, horizontal, human, human being, implement, indoor, indoors, inside, instructing, japanese ethnicity, juvenile, kid, knowledge, lab, lab coat, laboratory, latin american, latin american and hispanic ethnicity, latino, learning, listener, listening, male, man, mid adult, mid adult men, minor, multi-ethnic group, multicultural, multiculturalism, of african descent, oriental, pen, people, person, photography, professor, protection, pupil, r&d, research, research & development, research and development, rubber glove, rubber-glove, safeguard, safety, school, schoolmate, science, scientific experiment, security, speaking, standing, student, studying, talker, talking, teacher, teaching, teen, teenage, teenage boy, teenage boys, teenage girl, teenage girls, teenager, thirties, thirty, three quarter length, three-quarter length, together, togetherness, twenties, twenty, university, white coat, writing instrument, young, young adult, young men, youth, youthful, 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, bld119705