Ключевые слова: background, bar, bulb, certificate, chart, climate, cold, color, colorful, composition, concept, conservation, consumption, control, cost, drawing, drawn, eco, ecological, ecology, economy, effective, efficiency, efficient, electric, electricity, energy, environment, environmental, eu, flat, fluorescent, global, graph, green, heat, heating, home, house, household, idea, improvement, insulation, isolated, label, lamp, lay, leaves, level, light, money, multicolored, object, paper, performance, power, rating, reduce, renewable, safety, save, season, sustainability, technology, text, top, usage, utility, view, warm, white, winter,