Ключевые слова: alphabet, background, banner, bio, block, bright, clean, concept, cube, decoration, design, development, earth, eco, ecology, energy, environment, environmental, fresh, friendly, global warming, green, growth, health, horizontal, idea, leaf, letter, logo, message, nature, nobody, object, planet, recycling, reduce, renewable, save, sign, simple, sustainable, symbol, text, texture, think, wood, wooden, word, world,