Final answer:
The characteristic that is not used to characterize a biome is size.
Step-by-step explanation:
Out of the options provided, the characteristic that is not used to characterize a biome is size. Biomes are typically defined by the dominant vegetation, distinct climate, precipitation, and temperature patterns. Size is not a defining factor when categorizing a biome as different biomes can vary in size.
Learn more about Characteristics of biomes