In one to two sentences, describe characteristics of a high-pressure system. What’s the answer

A high-pressure system is typically associated with clear skies, calm winds, and stable weather conditions. It is characterized by descending air currents that create higher atmospheric pressure at the surface.

In 1–2 sentences, explain what biome comprises most of Antarctica and why the continent is described as being part of this biome. What’s the answer

Antarctica is mostly comprised of the polar desert biome, as the continent's extremely cold temperatures and low precipitation levels create conditions similar to those of other desert biomes. Despite the presence of ice and snow, the lack of liquid water and overall arid environment make Antarctica best classified as a polar desert biome.