Ключевые слова: background, business, care, circle, concept, conservation, cycle, design, earth, eco, ecology, economic, energy, environment, environmental, future, garbage, global, global warming, green, horizontal, icon, illustration, isolated, leaf, life, natural, nature, photo, planet, plastic, pollution, product, protection, recycle, recycling, reduce, reduction, renewable, renewable energy, resource, reuse, save, sign, sustainability, sustainable, symbol, waste,