Ключевые слова: background, battery, bio, car, clean, concept, conservation, design, earth, eco, ecological, ecology, electric, electricity, energy, environment, environmental, fuel, garbage, global, globe, green, icon, illustration, industry, isolated, leaf, lightbulb, logo, natural, nature, organic, pattern, planet, plant, plastic, pollution, power, recycle, recycling, reduce, save, set, solar, trash, tree, waste, water, world,