Ключевые слова: agriculture, alternative, background, business, care, communication, concept, conservation, crisis, discovery, earth, eco, ecology, electric, electricity, energy, environment, environmental, field, future, generate, generation, generator, global, green, growth, icon, industry, intelligence, landscape, mill, natural, nature, outdoor, people, plant, power, protection, recycle, renewable, save, sign, sky, sunlight, symbol, system, technology, turbine, warming, windmill,