Ключевые слова: abstract, background, blue, business, care, charity, concept, conservation, creative, day, design, development, earth, eco, ecology, energy, environment, environmental, fresh, friendly, global, globe, grass, green, growth, health, hold, hope, human, land, life, map, nature, ocean, peace, planet, plant, pollution, protect, responsibility, save, sign, sky, social, sustainable, symbol, travel, tree, water, world,