Ключевые слова: africa, america, apple, blue, clean, clear, concept, continent, earth, ecology, ecosystem, environment, europe, food, fruit, geography, global, globe, green, harvest, heal, health, help, illustration, land, leaf, map, natural, nature, ocean, organic, planet, protect, protection, recycle, recycling, reflection, sea, shiny, sign, south, sphere, symbol, tree, world,