Which adaptation might an organism have to help it survive in cold environments?

An organism's adaptation to survive in cold environments often involves features that provide insulation and retain body heat. Long fur serves as an effective adaptation because it traps air, which acts as an insulator, keeping the organism warm in frigid temperatures. The thickness and length of the fur can create a barrier against cold winds and prevent heat loss, which is crucial for maintaining a stable body temperature in harsh climates.

In contrast, while thick skin can also provide some level of protection against the cold, it is generally the presence of fur or a similar protective covering that is more effective for insulation. Short stature is often not a beneficial adaptation in cold environments, as it can lead to greater heat loss. Bright colors tend to be associated with warmer climates or specific signaling behaviors rather than cold weather survival. As such, long fur is a key adaptation for many animals living in cold regions.