Yak is able to survive on the mountains by following ways:
1. It has a mouth that is adapted to graze on a variety of plants.
2. It has a thick coat of hairs that protect it from extreme cold.
3. It has large chest and lungs that are adapted to low oxygen content in the mountains.
4. It has hooves and horns that are adapted to break the ice from frozen ground and graze on the grass below.