Ключевые слова: background, bio, business, care, city, concept, conceptual, conservation, day, development, earth, earth day, eco, ecology, electric, electricity, energy, environment, environmental, global, globe, green, growth, hand, hold, holding, hope, hot, human, inspiration, life, naturally, night, palm, peace, people, planet, pollution, protection, recycle, safety, save, science, sign, support, symbol, technology, warming, warning, world,