Keywords
16-17 years, 40-44 years, adult, australia, caucasian, caucasian appearance, classroom, close-up, day, direction, discovery, dna, education, genetics, high school student, ideas, indoors, knowledge, learning, life science, man, mature adult, melbourne, mid-adult, mid-adult man, model, molecule, natural sciences, science, sciences, selective focus, student, teacher, teaching, teenage boy, teenager, two people, 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, u13031711