Answer the following questions according to the text.The first confirmation of the existence of an ice continent at the South Pole was made by the Bellinghausen expedition of 1820. This expedition was made for Imperial Russia. In 1959, the Antarctic Treaty was signed by 17 nations. This treaty protects the continent from territorial claims by any other country and maintains it as a continent set aside for scientific studies. This natural laboratory has many research bases on it, set up by various countries of the world. Most of these, work together to obtain information, for scientific study.1. Antarctica is used _____. A) by the Russians. B) as a military base. C) by various countries of the world for their own use. D) by only 17 nations. E) to establish territorial claims. 2. The Antarctic continent was _____. A) first discovered in 1820. B) protected from scientists. C) a possession of Imperial Russia. D) a part of the Bellinghausen expedition. E) owned by the Russians. 3. The Antarctic Treaty _____. A) protects the continent from further expeditions. B) was signed at the North Pole. C) was prepared by the Bellinghausen expedition. D) was prepared in 1959. E) protects it from any country that might want to claim it as their own.