What factor explains why tundra biome is the main cold your around but taiga biome is have alternating warm and cold seasons?

The factor of difference in the latitude explains why tundra biome is the main cold year-round but taiga biome has alternating cold and warm seasons.

Explanation:

The Taiga biome completely lies within the temperate zone, whereas, the Tundra biome is the closest to the polar zone which is characterized by year-round winter. The Taiga biome, owing to its position, receives slanting sun for almost half of the year. The Tundra biome is influenced by the absence of direct insolation and the presence of permafrost. This is all due to the difference in latitudes of the two biomes.

81 is a composite number