Ключевые слова: air, alternative, background, biology, blue, business, clean, climate, concept, conservation, day, development, earth, eco, ecological, electricity, energy, environment, environmental, friendly, future, global, globe, government, grass, green, growth, hand, holding, industrial, initiatives, landscape, life, nature, people, plan, planet, plant, policies, power, protection, recycle, renewable, save, sky, solar, supply, sustainability, technology, tree, turbine, wind, windmill, world,