Ключевые слова: abstract, background, ball, blue, business, care, communication, concept, connection, conservation, day, design, development, digital, earth, eco, ecology, energy, environment, environmental, forest, fresh, global, globe, grass, green, hand, innovation, internet, leaf, life, light, map, nature, network, planet, plant, pollution, protection, recycling, save, social, space, sphere, sunlight, sustainable, symbol, technology, wood, world,