Ключевые слова: air, alternative, battery, butterfly, care, clean energy, cloud, co2, concept, conservation, cut, decoration, design, drop, eco, ecological, ecology, efficiency, electric vehicle, electricity, element, emissions, environmental, environmentally, global warming, go green, growth, icon, isolated, nature environment, object, paper, planet earth, plant, protection, rain, recycle, renewable, save, solar power, sprout, style, trash, tree leaf, vector illustration, waste, water, wind generator, world sign,