Ключевые слова: 3d, atom, atomic, background, biology, chain, chemical, chemist, chemistry, class, classroom, college, concept, dna, education, element, equipment, exam, formula, group, highschool, lab, laboratory, learning, lesson, microbiology, model, molecular, molecule, molecules, organic, particle, people, physics, plastic, pupil, research, school, science, scientific, scientist, structure, student, students, study, studying, symbol, technology, test, university,