Ключевые слова: background, barefoot, clean, color, concept, conservation, eco, ecological, ecology, effect, energy, environment, environmental, environmentally, foot, footprint, footstep, friendly, global, grass, green, greenhouse, human, icon, illustration, impact, imprint, isolated, leaf, natural, nature, organic, person, planet, pollution, print, protect, recycle, recycling, reduce, reuse, sign, spring, step, sustainable, symbol, walk, walking, warming, white,