Final answer:
Different biomes exist on Earth due to differences in climate, which determine the types of plants and animals that can thrive. Terrestrial biomes are classified based on temperature and precipitation. The same biome can occur in different locations with similar climates.
Step-by-step explanation:
The Earth has different biomes due to differences in abiotic factors, particularly climate. Terrestrial biomes are classified based on characteristic temperatures and amounts of precipitation. The same biome can occur in different geographic locations with similar climates. For example, the tropical rainforest biome can be found in different parts of the world with warm temperatures and abundant rainfall, while the desert biome can exist in various arid regions with low precipitation.