Ключевые слова: 3d, alternative, alternative energy, atom, background, chemical, chemistry, connection, eco, education, electricity, electrolysis, element, emission, energy, environment, friendly, fuel, fuel cell, future, gas, green, green energy, green hydrogen, h2, hydrogen, hydrogen engine, illustration, industry, innovation, model, molecular, molecular hydrogen, molecule, natural gas, nonpolluting, particle, physics, power, renewable, renewable energy, renewal, research, resource, science, scientific, structure, sustainable, system, technology,