Ключевые слова: adult, alternative, background, brick, bulb, businessman, cfl, closeup, concept, conservation, consumption, copy, earth, eco, ecology, electricity, energy, environment, fluorescent, friendly, future, green, hand, holding, idea, innovation, lamp, light, male, man, nature, person, power, recycle, renewable, resource, responsibility, reusable, safety, saving, solar, solution, space, spiral, sustainable, symbol, technology, text, wall,