The capital city is a vibrant metropolis where people from all over the world come to live and work.The ice on the mountains starts to melt in the spring, creating fresh rivers that flow down to the valleys below.Some animals have adapted to the harsh conditions of the deserts, where they roam freely in search of water and food.Explorers brave the extreme temperatures of the polar regions to study the glaciers and ice formations.The rivers that run through the lush forests are teeming with life, providing a source of sustenance for the local wildlife.