Ключевые слова: abstract, america, background, banner, bio, business, care, clean, concept, conservation, day, design, development, earth, eco, ecological, ecology, ecosystem, energy, environment, environmental, forest, friendly, glass, global, globe, green, hand, holding, icon, leaf, life, map, natural, nature, planet, plant, poster, protection, reusing, save, sign, sphere, sustainable, symbol, threedimensional, tree, water, world,