Ключевые слова: abstract, alternative, architecture, background, bio, brown, care, clean, closeup, concept, conceptual, creative, cutout, eco, ecological, ecology, energy, environment, environmental, estate, friendly, grass, green, hands, holding, home, house, idea, metaphor, miniature, natural, nature, object, paper, pollution, power, project, property, protection, recycle, residential, saving, shelter, sign, small, sustain, symbol, system, value,