What characterizes a biome?

A biome is characterized by a geographical area that contains distinct combinations of plants and animals adapted to the specific environmental conditions present in that region. This encompasses various factors such as climate, soil type, and geographical features, which influence the types of ecosystems that can develop there. For instance, a desert biome is characterized by sparse vegetation and organisms that can survive with minimal water, while a rainforest is lush and rich in biodiversity due to its humid conditions and abundant rainfall.

The defining feature of a biome is not just the presence of specific organisms but rather the overall community of life that is shaped by the prevailing environmental conditions, making option B the most accurate representation of what a biome is.