The reindeer and the camel are commonly used as beasts of burden in the?

The reindeer and the camel are commonly used as beasts of burden in the polar region and the Sahara Desert. Reindeer are used by the indigenous people of the Arctic regions, such as the Sami people, for transportation and as a source of food and clothing. They are well adapted to the cold, snowy conditions of the polar region and can pull sleds over long distances. Camels, on the other hand, are well adapted to the hot and dry conditions of the desert. They can travel long distances without water and can carry heavy loads across the sandy terrain of the Sahara Desert and other desert regions. Therefore, the reindeer and the camel are commonly used as beasts of burden in the polar region and the Sahara Desert, respectively.