Keywords
16-17 years, 18-19 years, 2, 20-25, 20-30, 25-30, adolescent, atom, bliss, boy, buddy, caucasian, cheerful, chemistry, child, childhood, children, chum, class, classmate, close up, close-up, closeup, color, color image, colour, companion, companionship, comrade, confidence, confident, cooperation, delight, delighted, education, enjoyment, fellow, female, friend, friendship, front view, gaiety, gal, girl, glad, gleeful, gratifying, happy, head & shoulders, head and shoulders, holding, human, human being, indoor, indoors, inside, instruction, jolly, joy, juvenile, kid, knowledge, lab, laboratory, lad, learning, lighthearted, looking at camera, male, merry, minor, molecular structure, molecule, multi-ethnic group, pal, particle, people, person, photography, physics, pleasing, pleasure, portrait, portraiture, positive, pupil, rejoicing, relationship, research, satisfaction, schoolmate, science, self-assured, smile, smiling, student, studying, teaching, teen, teenage, teenager, together, togetherness, tutoring, twenties, twenty, two, two people, vertical, western european, young, young adult, youngster, 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, bld051360