Did you know that most mountains are more than 1,000 feet (305 meters) high? It is hard for people and animals to breathe high up on a mountain. Discover more intriguing facts about this ecosystem in Mountains. Each World Languages title includes access to ten eBooks in ten languages! Our language toggle bar allows you to easily switch between English, Arabic, French, German, Hindi, Korean, Mandarin, Russian, Spanish, and Tagalog with a simple click. The full audio feature allows readers to listen to the text in their own language as they flip through the book. World Languages works on all platforms, including standard desktops, tablets, and SMART Boards.