Final answer:
Animals employ behavioral adaptations, physical insulation, and migration to cope with temperature fluctuations, ensuring survival across varied environmental conditions.
Step-by-step explanation:
Animals develop various adaptations to cope with temperature fluctuations, essential for their survival. Ectothermic animals, which depend on external heat sources, may modify their behavior to regulate body temperature. During hot desert days, they seek cooler areas and climb onto rocks to absorb heat at night. Conversely, endothermic animals use insulation such as fur, feathers, or body fat to maintain a stable internal body temperature. For instance, polar bears and seals have thick fat layers for heat conservation in subfreezing environments.
Furthermore, migration is a substantial adaptive response to seasonal temperature changes, enabling animals to relocate to maintain optimal living conditions. The Arctic Tern executes a lengthy 40,000 km migration annually between hemispheres to exploit seasonal advantages, while monarch butterflies travel thousands of kilometers to escape cold winters.