Ключевые слова: alternative, bioenergy, cable, care, closeup, concept, conceptual, connection, conservation, day, eco, ecofriendly, ecologic, ecological, ecology, efficiency, efficient, electric, electricity, energy, environment, environmental, grass, green, growth, horizontal, idea, innovation, nature, nobody, outdoors, outlet, plug, power, recycling, renewable, resource, responsibility, reuse, save, socket, sustainability, sustainable, technology,