Keywords
2, 20's, 20-24 years, 20-25, 20-30, 20s, 25-30, acknowledging, adult, answering, asking, atom, blackboard, calculation, caucasian, chalkboard, class, classmate, classroom, college, color, color image, colour, complexity, computation, displaying, educating, education, educator, enquiring, examining, exhibiting, explaining, fellow, female, gal, gentleman, guy, head & shoulders, head and shoulders, hearing, holding, horizontal, human, human being, indoor, indoors, information, inquiring, inside, instructing, instruction, intelligence, knowledge, lady, learning, listener, listening, looking up, male, man, mid section, mid-section, midsection, model, molecular model, molecule, particle, people, person, photography, pupil, questioning, responding, school, schoolmate, schoolroom, science, seated, showing, sitting, student, studying, teacher, teaching, textbook, training, tuition, tutor, tutoring, twenties, twenty, two, two people, university, western european, wisdom, woman, women, young adult, young men, 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, blm016369