Final answer:
Biomes are classified based on average temperature, average precipitation, and distinctive plants adapted to the area.
Step-by-step explanation:
The factors used to classify a biome include average temperature, average precipitation and distinctive plants adapted to the area. These three factors are important in determining the type of biome that exists in a particular location.
For example, the tropical rainforest biome is characterized by high average temperature, high average precipitation, and a rich diversity of plant species adapted to the rainforest environment.