Ключевые слова: background, business, care, climate, concept, conservation, development, earth, earth day, eco, ecological, ecology, electricity, energy, environment, environmental, forest, future, global, green, growth, hand, holding, industry, innovation, leaf, light, light bulb, lightbulb, natural, nature, plant, pollution, power, protect, protection, recycle, renewable, resource, responsibility, save, saving, science, sign, social, sustainability, sustainable, symbol, technology, warming,