Keywords
18-19 years, 20's, 20-24 years, 20-25, 20-30, 20s, 25-30, 30's, 30-34 years, 30-35, 30-40, 30s, 35-40, 4, acknowledging, adult, aiding, answering, asking, assisting, brown hair, brunette, caucasian, chatting, class, classmate, classroom, college, color, color image, colour, communicating, communication, conversation, conversing, counseling, day, daylight, daytime, demonstrating, demonstration, dialog, dialogue, discussing, educating, education, educator, enquiring, examining, eyeing, fellow, female, focus on foreground, four, four people, gal, gentleman, gesturing, guidance, guy, head & shoulders, head and shoulders, hearing, helping, horizontal, human, human being, indoor, indoors, inquiring, inside, instructing, instruction, instructor, knowledge, lab, laboratory, lady, learning, lecture, lecturer, lecturing, listener, listening, looking, male, man, mid adult, mid adult women, motioning, people, person, photography, physics, professor, pupil, questioning, research, responding, school, schoolmate, schoolroom, science, seeing, side view, signaling, speaking, speech, standing, student, studying, talker, talking, teacher, teaching, thirties, thirty, training, tuition, tutor, tutoring, twenties, twenty, university, viewing, waist up, waist-up, western european, 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, blm016377