Answer: Option B
Step-by-step explanation:
A biome can be best defined by its climate, plant and animal life. The climate of every biome is different. The biome can be defined as the place having different climate and based on the climate the plants and animals that best suits in the environment live there.
The animals that are found in the tundra biome are best suited to live in the polar regions with certain adaptations. Some of plants like cactus are found in the desert biome.
So, a biome can be best described by its climate, plants and animals.