Ключевые слова: asphalt, awareness, blue, celebrate, change, climate, cloud, concept, conservation, day, earth, eco, ecological, ecology, energy, environment, environmental, event, global, globe, go, go green, grass, green, happy, highway, holiday, life, map, nature, outdoors, peace, planet, plant, protect, recycle, road, save, saving, sky, spring, summer, sunlight, sustainable development, text, warming, word, world,