n 1–2 sentences, explain what biome comprises most of Antarctica and why the continent is described as being part of this biome.

Antarctica is mostly comprised of a polar desert biome which is characterized by extremely low temperatures and limited precipitation, making it the continent's dominant biome.

Most of Antarctica comprises the polar or tundra biome, characterized by its extremely cold temperatures, strong winds, limited precipitation, and presence of permafrost. The continent is described as being part of this biome because it features harsh, ice-covered landscapes with minimal vegetation and specialized animal species adapted to the extreme conditions.