Ключевые слова: background, bulb, business, concept, copy, creative, crisis, development, earth, eco, ecology, economical, electricity, energy, environment, environmental, friendly, future, global, green, growing, growth, idea, innovation, lamp, leaf, life, light, lightbulb, nature, new, plant, renewable, sapling, save, science, small, space, sprout, sustainability, sustainable, technology, tree, warming, water,