Ключевые слова: background, bulb, day, development, earth, eco, ecology, elements, energy, environment, environmental, forest, fresh, future, garden, global, green, growth, hand, holding, icon, industry, innovation, leaf, life, light, natural, nature, people, person, plant, power, protect, recycle, renewable, save, science, seedling, sign, spring, sustainability, sustainable, symbol, technology, tree, water,