Keywords
14-15, 14-15 years, 16-17, 16-17 years, 1717, adolescence, african, african ethnicity, book, boys, casual, casual clothing, caucasian, caucasian ethnicity, classmate, classroom, cloth, clothing, concentration, down, education, equipment, ethnicity, feb07, front, front view, group, hair, high, high school student, hold, holding, indoors, knowledge, lab, laboratory, laboratory equipment, learn, learning, look, looking, looking down, microscope, multi-ethnic, multi-ethnic group, only teenage boys, people, purestock, read, reading, research, researching, school, science, science lab, short, short hair, sit, sitting, sseditor=jm, student, study, studying, t-shirt, table, teenage, teenage boys, teenager, teenagers, teenagers only, two, two people, view, waist-up, years, 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, 1574r-25311, 1574r 25311, 1574r25311