The biome that comprises most of Antarctica is the polar desert biome. Antarctica is described as being part of this biome because it is characterized by extremely cold temperatures, very low precipitation, and a lack of vegetation. The harsh environmental conditions in Antarctica make it a polar desert, with most areas receiving less than 10 inches of precipitation per year. The continent is covered in ice sheets, glaciers, and snow, providing very limited habitat for plant and animal life. This extreme environment is what defines Antarctica as a polar desert biome.
